Kahului (HI) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Kahului.
Climate overview of Kahului
The climate in Kahului, Hawaii, United States of America, is remarkably consistent, with temperatures year-round averaging 28°C (82°F). The warmest month is August at 29°C (84°F), and the coolest is February at 26°C (79°F).
The city receives around 593 mm (23 in) of rainfall per year. It experiences a distinct dry season from May to July. March is the wettest month and June the driest. The most sunshine falls in July, with an average of 9.8 hours of daily sunshine.
Kahului Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kahului — and find the best time to visit.
Monthly Temperature in Kahului
In Kahului temperatures are generally consistent throughout the year. On average, daytime temperatures range from a comfortable 29°C (84°F) in August to a comfortable 26°C (79°F) in February.
Nighttime temperatures range from 24°C (75°F) in August to 20°C (68°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Kahului
On average, Kahului receives a reasonable amount of rainfall, with an annual precipitation of 593 mm (23 in). The seasons in Kahului bring significant changes in precipitation. The wettest month, March, receives moderate rainfall, with an average of 74 mm (2.9 in) of precipitation. This rainfall is distributed across 12 rainy days.
In contrast, the driest month, June, experiences much less rainfall, totaling 32 mm (1.3 in) over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Kahului Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Kahului
Kahului enjoys sunny spells year-round. July sees up to 9.8 hours of daily sunshine, perfect for a sunny trip. February, the least sunny month, still offers a generous 7.0 hours of sun despite this cloudier time of the year.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Kahului
The mean water temperature over the year ranges from 24°C (75°F) in January to 27°C (81°F) in September.
Water temperature over the year
Humidity in Kahului by Month
The relative humidity is high throughout the year in Kahului.
The city experiences its highest humidity in January, reaching 78%. In August, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Kahului
The average wind speed over the year ranges from 4 m/s (8 knots) to 6 m/s (12 knots). It is lower in January, February, October, November and December and higher in June, July and August. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Kahului
Frequently asked questions about the climate in Kahului
What is the best time to visit Kahului?
Kahului has a distinct dry season from May to July.
What temperatures can I expect in Kahului?
Daytime highs range from 26°C (79°F) in February to 29°C (84°F) in August. Nighttime lows range from 20°C (68°F) to 24°C (75°F). Temperatures stay relatively stable year-round.
How much rain does Kahului get?
Annual rainfall is around 593 mm (23 in). March is the wettest month with 74 mm (2.9 in), while June is the driest with 32 mm (1.3 in).
How sunny is Kahului?
Kahului receives around 2,989 hours of sunshine per year. July is the sunniest month with 294 hours, while February is the cloudiest with just 210 hours. Overall, Kahului enjoys abundant sunshine.
Kahului 3-Day Forecast
Kahului (HI) 3-Day Forecast
Kahului on the map
Kahului is highlighted — select any city to see its climate.
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