Climate and monthly weather forecastKahului, HI

The climate of Kahului

Kahului, Hawaii, characterized under the Köppen climate classification as Af, displays a prominent Tropical Rainforest climate. Located in the Pacific ocean, the region sees relatively consistent patterns of temperature, humidity, and rainfall throughout the year, making it an evergreen destination.

The usual range for average high temperatures lies from 73.9°F (23.3°C) to 79.9°F (26.6°C), reflecting the warm and lush nature of the area. The lowest average temperatures tend to linger from 70.7°F (21.5°C) to 76.5°F (24.7°C) - a modest difference, pointing towards the region's stable thermal conditions. Kahului is no stranger to humidity - a consistent humidity trend of 74% to 76% prevails throughout the year, reinforcing the damp, tropical climate.

Precipitation in Kahului ranges from a low of 0.2" (5mm) to a high of 0.87" (22mm) monthly. This variation in rainfall is frequent throughout the year, with minimal months showing an absence of rain. The area experiences 6.6 to 11.9 days of rainfall on average, substantiating a healthy volume of rainfall spread through the year rather than concentrated in certain months. An important factor to highlight is the visibility in Kahului - stable at 6 miles throughout the year, indicating clear and unobstructed sightlines for most of the year.

The best time to visit Kahului

Based on the availability of optimal weather conditions, May through July offer the best times to visit Kahului. During these months, the island city experiences an average high temperature of 77°F (25°C) to 78.5°F (25.8°C), an average rainfall of 0.2" (5mm) to 0.39" (10mm), and an average of 6.6 to 8.5 days of rainfall. With over 11 hours of daylight, around 11.5 hours of sunshine, and a consistent visibility of 6 miles, these combine to provide the ideal conditions for outdoor activities and exploration.

The worst time to visit Kahului

While Kahului's weather presents relatively mild fluctuations, the months requiring a bit more caution, are March and December. In these months, rainfall reaches its peak with up to 0.87" (22mm) of rainfall spread across 9.2 to 11.9 days. Despite these rainy periods, the temperatures stay relatively mild between 73.9°F (23.3°C) to 74.7°F (23.7°C). However, potential visitors may want to consider these weather conditions before planning their trip.

Spring weather in Kahului

Spring descends upon Kahului between March and May, presenting temperatures varying from 70.7°F (21.5°C) to 73.4°F (23°C). Rainfall during this season averages between 0.63" (16mm) to 0.87" (22mm), with the number of rainy days being 8.1 to 11.9. As Spring advances, weather conditions gradually improve with increasing hours of sunlight, making it a pleasant period to experience Kahului's natural beauty.

Summer weather in Kahului

Kahului's summer spans June through August, characterized by average temperatures from 74.7°F (23.7°C) to 76.3°F (24.6°C), and some of the least amounts of rainfall - ranging from 0.2" (5mm) to 0.43" (11mm). The city experiences longer sunlight hours, reaching 13.4 hours in June and slowly decreasing towards August. Along with increased daylight comes an increased UV index, ensuring ample opportunity for those looking to soak up the tropical sun.

Autumn weather in Kahului

Autumn in Kahului lasts from September through November. The temperature, on average, lies from 74.8°F (23.8°C) to 76.5°F (24.7°C), while the rainfall varies from 0.39" (10mm) to 0.55" (14mm). This season experiences fewer hours of daylight and sunshine, but maintains a similar level of humidity compared to other seasons. Despite the rains, the climate remains relatively warm and pleasant.

Winter weather in Kahului

Winter arrives in Kahului in December, with temperatures dipping slightly from 72.9°F (22.7°C) to 75.7°F (24.3°C). Rainfall during this season shows a noticeable increase reaching up to 0.87" (22mm), spread over 7.7 to 9.2 days. Daylight hours experience a minor reduction, but this does not significantly affect the overall pleasant winter climate of Kahului. Along with these, the sea temperature dips to 76.8°F (24.9°C), making it a season prioritized more towards relaxation than water-based activities.

Weather in January

Being the first month of the year, January in Kahului, Hawaii, is characterized by a mild and pleasant weather pattern. Temperatures oscillate between 71.6°F (22°C) and 74.7°F (23.7°C). This makes January ideal for beachside relaxation, as the gentle breeze complements the warm air rather perfectly. Weather in January »

Weather in February

Proceeding into February, there is a slight decline in temperatures which are now moving from 70.7°F (21.5°C) to 73.9°F (23.3°C). Notably, this month perceive an escalation in rainfall frequency as well. Nevertheless, the weather remains fairly congenial for explorations across the city. Weather in February »

Weather in March

When it comes to March, the weather undergoes another mild change, but maintains its charming disposition. Though the frequency of rainy days experiences a surge, it still remains within manageable boundaries. With temperatures oscillating from 70.7°F (21.5°C) to 74.3°F (23.5°C), the days continue being agreeably warm. Weather in March »

Weather in April

Investigating the weather conditions in April, it becomes evident that the rise in temperatures is discernible as they now range between 72.1°F (22.3°C) to 75.6°F (24.2°C). Meanwhile, the city witnesses a drop in rain showers which certainly broadens the prospects for outdoor recreations. Weather in April »

Weather in May

By the time May arrives, Kahului has already begun to display the signs of the approaching tropical summer. The increased daylight hours coupled with longer sunshine duration facilitate longer days packed with outdoor activities. In this month, temperatures swing from 73.4°F (23°C) to a warming 77°F (25°C). Weather in May »

Weather in June

June can be regarded as the onset of the true tropical summer in Kahului, with temperatures sailing from 74.7°F (23.7°C) to 77.9°F (25.5°C). Abundant sunshine, lenient winds, and controlled humidity accentuate the allure of the beachside city. Weather in June »

Weather in July

July in Kahului is the epitome of tropical summer, with the mercury hovering between 75.6°F (24.2°C) and 78.8°F (26°C). Brilliant sunshine embellishes the city, and the sea surface temperature rises slightly, making water-related activities all the more enticing. Weather in July »

Weather in August

With temperatures soaring from 76.3°F (24.6°C) to 79.5°F (26.4°C) in August, the tropical vibe intensifies. But Kahului doesn't let the heat become overbearing thanks to its regularly flowing breeze. Humidity escalates, albeit marginally, but it hardly leads to discomfort. Weather in August »

Weather in September

September displays a splendid balance between cool winds and warmth with temperature scales swaying between 76.1°F (24.5°C) and 79.9°F (26.6°C). Although this month sees a mild amplification in rainfall, it's hardly a reason for concern. Weather in September »

Weather in October

Moving on to October, there is a minor dip in the temperatures, now spanning from 76.5°F (24.7°C) to 79.3°F (26.3°C). The trend of gentle winds caressing the city persists, and the overall humidity remains, well, unchanging. Weather in October »

Weather in November

November in Kahului displays an evident transition from the tropical conditions to cooler winds. The weather adorns a refreshing hue with temperatures varying between 74.8°F (23.8°C) and 77.7°F (25.4°C). Though rain showers become more frequent, the city's overall aura stays heartening, courtesy of the benevolent sunshine. Weather in November »

Weather in December

December brings the year to a close with a cool demeanor, as temperatures fluctuate from 72.9°F (22.7°C) to 75.7°F (24.3°C). While the rainfall frequency escalates, it's quite well-balanced by the city's prolonged sunshine hours. Weather in December »