Maui Weather: What to Expect on Each Side of the Island

Maui weather is warm year round, but it isn’t the same all over the island. The leeward coasts around Kaanapali, Kihei and Wailea are generally drier, while windward East Maui and the mountains see more clouds and showers; trade winds can bring breezy conditions to both sides.

That means a rainy forecast for Hana doesn’t automatically mean a washout in Wailea, and a sunny beach forecast doesn’t tell you what conditions will be like at Haleakala. Check a forecast for the specific area you’ll visit, then pack for sun, passing showers, wind and cooler elevation.

Quick answer: Expect warm daytime weather near the coast, with showers more common on the windward side and around mountains. Maui’s rainy season is usually described as the cooler part of the year, but rain can fall in any month. Trade winds affect comfort and ocean conditions, so bring sun protection, a light rain layer and a warmer layer for Upcountry or the summit.

What is Maui weather like year round?

Maui has a tropical climate, but “tropical” doesn’t mean that every coast is hot, dry and sunny every day. The island’s terrain creates distinct local patterns. The west and south resort areas often have drier conditions, while the north and east sides and higher elevations are more exposed to clouds, showers and wind.

Long-term figures vary depending on the location and dataset. One historical summary based on 15 years of data reports a Maui-wide average of 1,016 millimeters of rain across 52 rainy days per year. The same page identifies March as its wettest month, averaging 114 millimeters, and June as its driest, at 60.3 millimeters. Treat those as broad historical averages, not a forecast for your hotel or a promise about any particular day, according to World Weather Online.

Monthly averages can also hide short, intense showers and major local differences. The weather at Kahului is not a dependable stand-in for Hana, the summit or a beach on the opposite side of the island. For a useful day-to-day picture, check the area forecast and look for the words windward, leeward, mauka (toward the mountain) and makai (toward the sea).

The National Weather Service forecast products illustrate the contrast. A Maui Central Valley North forecast called for morning sunshine, partly sunny afternoon skies and isolated showers, while a separate windward-west forecast included scattered showers and stronger winds. Those are dated examples, not general climate averages, but they show why a single island-wide icon can be misleading, according to the National Weather Service Maui Central Valley North forecast and the National Weather Service Maui Windward West forecast.

For a month-by-month planning view, see our Maui weather by month guide. If your dates are flexible, our best time to visit Maui guide compares seasonal weather with other trip-planning factors.

Why do the windward and leeward sides feel different?

Windward means the side facing the prevailing wind. On Maui, trade winds commonly arrive from the east or northeast, bringing moisture toward the north and east sides and the island’s mountains. As air rises over higher terrain, clouds and showers are more likely to form. The leeward side is sheltered from some of that airflow, so it is often sunnier and drier, though it can still get showers.

In practical terms, East Maui, including the Hana area, and parts of the north shore tend to be showery more often than the leeward resort areas. West Maui and South Maui are often better bets for a beach day when windward showers are forecast, but don’t assume the sun will hold all day. A band of moisture or a change in wind can alter the pattern.

The National Weather Service’s Hawaii state forecast describes the pattern in direct terms: scattered showers in windward and mountain areas, with isolated showers leeward. The forecast is a dated snapshot, not a permanent promise, but it’s a useful example of how rain can be concentrated on one side while the other remains mostly sunny, according to the National Weather Service state forecast.

There’s also a difference between a passing shower and a day of persistent rain. Forecasts may mention showers even when much of the day is dry. In the November forecast for Maui Leeward West, for example, the National Weather Service expected sunny or mostly sunny periods with isolated showers on several days. Read the description of timing and location, not only the rain percentage.

If you’re picking a base, weather is one factor, not the only one. Compare the coast, lodging style and drive plans in our guides to where to stay in Maui and West Maui versus South Maui.

How do trade winds affect a Maui trip?

Trade winds are a regular part of Maui’s weather pattern. Forecasts in the research notes repeatedly describe winds from the northeast or east, sometimes at 10 to 25 miles per hour, with stronger gusts in some locations and periods. Even if the air temperature is warm, wind can make an exposed beach, a lookout or a boat ride feel much less comfortable.

Wind is not just a comfort issue. It can affect boat trips, small craft and surf conditions. A November 2026 marine forecast for Maui County Leeward Waters listed a Small Craft Advisory and forecast northeast winds increasing to 20 to 25 knots, with seas of 5 to 7 feet on Wednesday. That is a dated marine forecast, not a land forecast or a typical daily condition; check the current marine advisory before booking or boarding a boat, according to the National Weather Service Maui County Leeward Waters forecast.

A separate Maui forecast described trades as moderate to locally breezy, strengthening over a few days, with the strongest winds expected through terrain gaps and around ridges. It also distinguished east-facing-shore surf from the large northwest swell expected on north- and west-facing shores. In other words, “windy” does not tell you what every beach or boat route will be like. Look for both the wind direction and the marine or surf report, according to Maui Now’s November 10, 2026 forecast.

Wind can also change through the day. A morning forecast may be calmer than the afternoon outlook, and conditions at a coastal resort may differ from an exposed ridge or a mountain road. If you’re planning a boat outing, a summit visit or a long drive, check the forecast again before setting out. Don’t treat a hotel’s sunshine as a readout of conditions elsewhere.

For beach time, use the forecast as a planning tool, then check conditions on arrival. Wind, swell and currents can make the water rough even when the sky is clear. Never assume a beach is safe for swimming from a sunny forecast alone.

When is Maui’s rainy season?

Maui’s rainy season is generally associated with the cooler months, but rainfall is not confined to a neat season. Showers can occur year round, and the island’s windward-leeward split matters as much as the month. The historical summary in the notes lists March as Maui’s wettest month and June as its driest, but those are island-wide averages from one 15-year dataset, not a guarantee for a particular town or trip, according to World Weather Online’s historical summary.

So, don’t cancel a winter trip because the forecast mentions rain. Instead, have a flexible plan: put an outdoor activity on the clearest forecast day, keep a leeward option ready, and avoid planning every hour around a single forecast. A shower may be local or brief; sustained rain or strong wind is a different matter.

For East Maui, rain is part of the landscape and a reason the area can look and feel different from the drier resort coasts. But wet weather changes the risks on roads, trails and around streams. Flash flooding can happen at streams and waterfalls, so don’t enter fast-rising water or cross a flooded road. If conditions are poor, postpone the outing rather than trying to make a scheduled stop work.

On the Road to Hana, rain can mean slick roads and limited visibility. Drive to conditions, don’t stop where you block traffic, and don’t treat waterfalls or roadside pools as automatically safe places to swim. Check local conditions before setting out, and change plans if rain is heavy. Our things to do in Maui when it rains guide has ideas for a wet day that don’t depend on a beach forecast.

Clouds and showers also vary by elevation. A forecast for coastal Hana or Kahului does not tell you what you’ll encounter at Haleakala. The November 2026 forecast from Maui Now, for example, listed substantially cooler temperatures at Upcountry and summit locations than at the shore. That specific forecast is not a year-round climate table, but it’s a good reminder to check the elevation you’ll visit, according to Maui Now’s regional forecast.

How warm is Maui, and where is it cooler?

Coastal Maui is warm in the forecast examples, but local temperatures depend on elevation, cloud cover, wind and time of day. In a November 2026 forecast, South Maui was expected to reach around 85°F, while Upcountry locations were forecast much cooler. Kahului forecasts from the same period included daytime highs in the upper 70s to mid 80s°F and nighttime lows around the upper 60s to mid 70s°F. These are examples of specific forecast days, not climate normals.

Don’t use a coast forecast to decide what to wear at the Haleakala summit. Higher elevations can be cool and windy even when the beach is warm. If you’re going up for sunrise or spending time around Upcountry, pack a warm layer and wind protection, then check the forecast for the summit or the exact area you plan to visit.

Rainfall statistics can sound inconsistent because sources define their locations and periods differently. World Weather Online’s long-term figures put average temperatures between 19.2°C in February and 26.5°C in September, while its Maui Now daily forecasts describe different places and dates. These figures answer different questions: a historical average is not a useful prediction for a single day, and a local forecast is not an annual average. Use climate data to choose a general season and a local forecast to make your daily plan, according to World Weather Online and the Met Office forecast for Kahului.

The Met Office forecast page is for Kahului, not the whole island. Its November 2026 outlook showed daytime highs around 27 to 29°C and nighttime lows around 20 to 23°C on the days listed, with showers appearing in the forecast. That’s a useful check for central Maui, but it should not replace a forecast for Hana, a beach or the summit, according to the Met Office Kahului forecast.

When comparing temperatures, remember that a breezy 80°F day can feel different from a sheltered 80°F day. Humidity, sun exposure and wind matter. Plan shade and water breaks, and take the ultraviolet index seriously: the Met Office forecast page advises shade during the strongest part of the day and recommends a shirt, sunscreen and hat when its UV index is very high.

What should you know about ocean temperatures and beach conditions?

The research notes don’t provide a dependable month-by-month ocean temperature series for Maui, so we won’t invent one. For trip planning, use the current beach and marine conditions rather than assuming the water will feel the same on every coast or in every month. Wind and swell can also affect how comfortable it is to get in the water.

Forecasts can differ by shore orientation. The November 2026 marine forecast described east-northeast wind waves and a separate north-northwest swell, while Maui Now’s discussion expected east-facing-shore surf to rise and a large northwest swell to affect exposed north and west shores. Those forecasts are date-specific, but the basic planning point holds: check the report for the coast you’ll visit, not a general island forecast, according to the National Weather Service marine forecast and Maui Now.

Never use sunshine as a safety signal. Shorebreak, currents and changing surf can make a beach dangerous, and the notes don’t establish safe conditions at any named beach. Check posted signs and local advisories, ask a lifeguard when one is present, and stay out if conditions look rough or you’re unsure. For snorkelling, go only when conditions are appropriate for your ability, and don’t enter the water alone.

Winter forecasts may include large surf on north- and west-facing shores, while east-facing shores can be affected by trade-wind chop. That doesn’t mean a specific beach will be safe or unsafe on a certain date. Check conditions on the day and be willing to switch plans. Our Maui beaches and best snorkeling in Maui guides help compare locations, but neither can replace a same-day ocean check.

What should you pack for Maui weather?

Pack for warm coastal weather, strong sun, wind and the possibility of a shower. You don’t need a different suitcase for every side of the island, but you’ll be more comfortable if you can add or remove a layer. A light rain shell is more useful than a heavy coat for most coastal plans; a warmer layer is sensible if you’ll go to Upcountry or Haleakala.

There’s no need to pack a bulky rain wardrobe just because your travel dates overlap with Maui’s rainy season. A compact rain layer and shoes suited to your plans are usually more practical. But don’t pack only swimsuits and sandals if you’ll leave the coast for a mountain visit or a wet-weather drive.

Bring sun protection even when clouds are around. UV can still be high, and the Met Office’s Kahului forecast advises using shade during peak UV hours and wearing a shirt, sunscreen and hat. Reapply sunscreen as directed by its label, and check current local rules if you’re choosing a product for use near reefs; the research notes do not specify the current legal requirements.

Keep a dry layer in the car if you have one, especially for a long drive. A quick shower can be isolated to one area, but being prepared means you can continue with a flexible plan rather than needing to return to your lodging. Check the forecast before leaving, and don’t drive into flooded areas or ignore road closures.

How should you plan around weather by area?

West Maui: Kaanapali, Napili and Kapalua are on the leeward side, but they’re not identical in exposure or day-to-day conditions. Forecasts for West Maui can call for sun and breezy northeast winds, with isolated showers. Use a local forecast and a same-day beach report before deciding on swimming or a boat outing.

South Maui: Kihei and Wailea are also leeward choices that can be good alternatives when showers are focused windward. They can still be windy, and the November 2026 South Maui forecast described gusty trades. Don’t assume a south-shore beach is calm because a regional forecast says mostly sunny.

North and East Maui: Paia, the north shore and Hana are more exposed to windward showers. Build flexibility into outdoor days and be cautious around streams and waterfalls after heavy rain. If weather is poor, change the day’s plan rather than pushing on to a viewpoint or trail in unsafe conditions.

Central Maui and Kahului: Forecasts here can be useful for airport-area plans and the central valley, but they don’t represent the whole island. Kahului’s conditions in the Met Office forecast included showers on some days and sunny intervals on others. Check the airport-area forecast for arrival and departure logistics, then check again for your destination.

Upcountry and Haleakala: Elevation means cooler conditions and a greater need for layers. A coastal forecast is not enough for a summit trip. Check the forecast for the area you’re visiting and any current alerts before driving; if wind or poor visibility makes the trip uncomfortable, postpone it.

If rain changes your plans, don’t force a beach day. Pick a sheltered indoor activity, shift the outing to a drier forecast window or keep the day open. A cloudy patch on one side of Maui doesn’t necessarily mean the same conditions island-wide, but a strong wind or heavy-rain advisory deserves more attention than a general sunny icon.

How we researched this

We compared National Weather Service forecasts for Maui zones and marine waters, the Met Office’s Kahului forecast, Maui Now’s regional weather report and a published historical climate summary. Forecasts are time-specific and can change, so the dated examples here explain patterns rather than predict your travel dates.

We did not receive payment from any business mentioned. For current conditions, alerts and marine advisories, confirm details with the National Weather Service or the relevant forecast provider before you go.

Before you go

Check the forecast for the exact area you plan to visit, then check again before a boat trip, mountain drive or beach day. Pack sun protection, a light rain layer and a warmer top for higher elevations. Most important, let current wind, surf and rain conditions change your plans when they need to.