Climate and monthly weather forecastLahaina, HI

The climate of Lahaina

Classified under the Köppen climate groups, Lahaina, Hawaii, USA enjoys a As type climate. This typology, given the name "Tropical wet and dry or savanna" classifies regions with a notable dry season during the so-called 'summer'. Lahaina's geographical setting lends itself to stable weather conditions with only minor fluctuations throughout the year.

Studying the climate data reveals that temperature highs hover between 73.9°F (23.3°C) in February to 79.7°F (26.5°C) in September. On the low end, the temperatures range from a pleasant 70.7°F (21.5°C) in March to a balmy 76.5°F (24.7°C) from August to October. The relative humidity is consistent throughout the year, with levels sitting between 75% in multiple months and 77% in July.

Rainfall showcases a larger range, from a minimal 0.35" (9mm) in July to a peak of 1.1" (28mm) in March. Monthly rainfall days also showcase variety with a low of 7.7 days in November and high of 13.4 days in March. Notably, sea temperatures are uniformly warm, from 76°F (24.4°C) in March to a warm 80.2°F (26.8°C) in September.

Exceptionally, the highest winds gust at 18.8mph (30.3km/h) in July whereas the lowest dip to 14.5mph (23.3km/h) in January. Among these overall stable weather conditions, March stands out as the month with highest rainfall, and July as the driest month.

The best time to visit Lahaina

The inviting climate of Lahaina welcomes visitors throughout the year. However, for those who prefer the sunniest and driest conditions, July and August might be considered the optimal time for a visit. Both months offer peak sea temperatures ranging from 78.6°F (25.9°C) to 79.6°F (26.4°C) respectively. High temperatures remain comfortable between 78.8°F (26°C) and 79.3°F (26.3°C). Visitors will enjoy a notable reduction of rainfall during these months, with 0.35" (9mm) in July and 0.39" (10mm) in August respectively. The low number of rainfall days (each month recording 7.8 days and 7.9 days respectively) provide ample opportunity for outdoor exploration.

The worst time to visit Lahaina

With favourable weather conditions throughout the year, Lahaina doesn't have a detrimental time for visit. Yet, for visitors who prefer the driest conditions, March may not be considered the optimal time. This month receives the highest rainfall with 1.1" (28mm) spread over 13.4 days, the highest number of rainy days across the year.

Spring weather in Lahaina

Spring in Lahaina (March, April, May) translates into warm and reasonably sunny days. March sees the highest rainfall of the year, but numbers gradually reduce as the season progresses. High temperatures remain stable from 74.1°F (23.4°C) to 76.8°F (24.9°C), while low temperatures rise gently from 70.7°F (21.5°C) to 73°F (22.8°C). Such conditions combined with increasing sunshine hours - from 8.3 hours to 10.6 hours - make Spring a delightful season to experience in Lahaina.

Summer weather in Lahaina

The Lahainian summer (June, July, August) guarantees warmth and abundant sun. The temperatures show a slight uptick with highs ranging from 77.9°F (25.5°C) in June to 79.7°F (26.5°C) in August, while lows pitch between 74.8°F (23.8°C) and 76.5°F (24.7°C). Notably, the rainfall dips to its yearly minimum in July, reaching 0.35" (9mm) over 7.8 days, providing more clear days for visitors to enjoy.

Autumn weather in Lahaina

Autumn (September, October, November) brings continuation of pleasant weather in Lahaina. The temperatures remain comfortably high, from 79.5°F (26.4°C) in September to 77.5°F (25.3°C) in November, while the lows are fairly constant around 76.5°F (24.7°C). Rainfall increases slightly in this season, from 0.43" (11mm) in September to 0.47" (12mm) in November.

Winter weather in Lahaina

Winter is a warm affair in Lahaina (December, January, February), with high temperatures between 74.8°F (23.8°C) and 75.4°F (24.1°C) and lows between 71.6°F (22°C) and 72.7°F (22.6°C). Despite the term 'winter', the climate remains tropical, with December experiencing a slight increase in rainfall to 1.02" (26mm). Sunshine hours are slightly reduced, ranging from 6.7 hours to 8.3 hours, still providing ample daylight for activities.

Weather in January

January tends to lay the foundation for the year's weather pattern in Lahaina, Hawaii. Mild temperatures typically persist with occasional short spells of rainfall, a theme that recurs throughout the year. A slight rise in the relative humidity often accompanies these occasional showers. Weather in January »

Weather in February

February weather follows a similar pattern to January with subtle shifts. Although the average temperature remains consistent, rainfall tends to increase slightly. Wind speeds also rise, adding a slight bracing chill to the otherwise tropical warmth. Weather in February »

Weather in March

March bestows Lahaina with the year's first notable shift in weather. Rainfall sees a marginal spike, going up to 1.1" (28mm) for the month. The number of rainfall days increases to 13.4 compared to fewer days in previous months, marking it as one of the relatively more damp periods. Weather in March »

Weather in April

In April, a marvelous evolution takes place with the Lahaina weather stirring towards the drier side. This transition heralds a mild decrease in rainfall and an increase in sunshine hours. Additionally, the sea temperature begins to rise gradually, inviting beach enthusiasts to revel in their favorite activities. Weather in April »

Weather in May

May carries on the excellent work of its predecessor month, May sees heightened temperatures and drier conditions prevail overtaking the Lahaina skies. Daylight hours edge upwards, promising extensive sunshine, a delight for sun worshippers. Weather in May »

Weather in June

June is the harbinger of peak summer in Lahaina. Temperatures max out at 77.9°F (25.5°C), marking the beginning of the warmest period. Concurrently, the sea temperature also experiences a boost, rising to a comfortable 78.4°F (25.8°C). Weather in June »

Weather in July

July stands in the limelight as the driest month in Lahaina. The month is noted for its lowest rainfall of 0.35" (9mm), boasting a stark contrast to the rest of the year. Simultaneously, the July sea is at its warmest, encouraging a pleasant splash. Weather in July »

Weather in August

As the calendar turns, August ushers in the warmest period in Lahaina. The temperature delta from July is minimal, but sea temperatures touch a zenith and warm up to a cozy 79.6°F (26.4°C). Beachgoers would find it hard to resist the lure of the ocean during this time. Weather in August »

Weather in September

September is renowned for boasting the highest temperatures of the year in Lahaina, averaging at a top figure of 79.7°F (26.5°C). This heat harmonizes with the prolonged daylight hours, making the month ideal for sunbathers. Weather in September »

Weather in October

October weather in Lahaina is noted for its balance. The season's warm spell begins to subside, with temperatures taking a slight dip. However, sea temperatures remain inviting, still carrying summer's warmth. Rainfall sees a marginal spike, hinting at the approaching wet season. Weather in October »

Weather in November

November is a month of transitions in Lahaina. The prominent warm temperatures of previous months, as well as sea temperatures both taper off. Rainfall sees a slight increment, showing signs of the impending wet season. Sunshine hours decrease, following the seasonal swing into the colder months. Weather in November »

Weather in December

December in Lahaina is characterized by a significant shift in the weather. Temperatures drop further, making the weather a tad cooler. Rainfall replicates a yearly cycle by rising up to 1.02" (26mm), signifying a return to damp conditions. Weather in December »