Question 1

What is the annual temperature range in Honolulu?

Accepted Answer

Honolulu has one of the most stable climates in the United States, with an annual temperature range of just 14.1°C (25.4°F) based on 2024 weather data.

Throughout 2024, Honolulu maintained an average temperature of 22.6°C (72.7°F). The warmest month was September at 24.4°C (75.9°F), while the coolest was February at 20.6°C (69.1°F). This means the difference between the warmest and coolest monthly averages was only 3.8°C (6.8°F), highlighting the city's remarkably consistent tropical weather.

Looking at temperature extremes in 2024, Honolulu recorded its highest temperature of 28.7°C (83.7°F) in September and its lowest of 14.6°C (58.3°F) in January. The seasonal variation is notably mild, with summer months (June through August) averaging 23.7°C (74.7°F) and winter months (December through February) averaging 21.3°C (70.3°F), a difference of just 2.4°C (4.4°F).

This minimal temperature variation makes Honolulu ideal for year-round outdoor activities and travel planning. With average humidity around 77.5%, the tropical climate remains comfortable throughout all seasons. Visitors can expect pleasant weather conditions whether visiting in the peak summer months or during the slightly cooler winter period.

Question 2

What is the wettest month in Honolulu?

Accepted Answer

May was the wettest month in Honolulu in 2024, recording 174.6mm (6.87 inches) of rainfall—more than three times the monthly average.

This significant precipitation total made May 2024 stand out from the rest of the year in Honolulu. January followed as the second wettest month with 115.8mm (4.56 inches), while April came in third at 75.9mm (2.99 inches). In contrast, February was the driest month, receiving only 20.9mm (0.82 inches) of rain.

Honolulu received a total of 660.9mm (26.02 inches) of precipitation throughout 2024, averaging 55.1mm (2.17 inches) per month. The rainfall pattern showed interesting variation from traditional expectations, with late spring delivering the heaviest downpours rather than the typical winter wet season.

For visitors planning a trip to Honolulu, these 2024 precipitation patterns suggest that May can bring heavier-than-expected rainfall despite being a transition month into summer. However, even during the wettest periods, showers in Honolulu tend to be brief and localized, rarely disrupting outdoor activities for long. Packing a light rain jacket is advisable year-round, but especially in spring months when precipitation can be more unpredictable.

Question 3

What are the sunniest months to visit Honolulu?

Accepted Answer

The sunniest months to visit Honolulu are October and September, with October 2024 recording an impressive 264.7 hours of sunshine and September close behind with 263.7 hours.

During 2024, Honolulu enjoyed approximately 2,821 hours of annual sunshine, averaging around 235 hours per month. The fall season stands out as particularly bright, with September through November averaging 251.6 hours of sunshine monthly. October offers about 8.5 hours of daily sunshine on average, paired with pleasant temperatures of 25.4°C (77.7°F) and minimal rainfall of just 29.4 mm.

May also ranks among the sunniest months in Honolulu, with 254.4 hours of sunshine in 2024. However, May experienced higher precipitation that year, making the fall months a better choice for visitors seeking consistently sunny skies.

The winter months of January and February are the least sunny in Honolulu, with February 2024 recording only 208.5 hours of sunshine. That said, even the cloudiest month in Honolulu still offers over 200 hours of sunshine, highlighting the city's year-round appeal for sun-seekers.

For the best combination of abundant sunshine, warm weather, and low rainfall, plan your visit to Honolulu between September and October. These months deliver optimal conditions for beach activities, sightseeing, and outdoor adventures.

Question 4

What is the average humidity in Honolulu throughout the year?

Accepted Answer

Honolulu maintains a consistently humid tropical climate, with an average humidity of 77.5% throughout 2024. This moderate-to-high humidity level is characteristic of Hawaii's oceanic climate and remains relatively stable across all seasons.

In 2024, humidity levels in Honolulu ranged from 71.7% in February to 82.1% in January. The winter months (December through February) averaged 77.8% humidity, while summer months (June through August) averaged 78.1% humidity. This minimal seasonal variation of less than 1% demonstrates the remarkable consistency of Honolulu's climate conditions.

The highest humidity in Honolulu during 2024 occurred in January at 82.1%, coinciding with the wet season. February recorded the lowest monthly average at 71.7%, making it the driest month in terms of atmospheric moisture. Despite these fluctuations, all months stayed within a comfortable range below 85%.

For visitors and residents, Honolulu's humidity levels are manageable thanks to consistent trade winds that provide natural cooling. The combination of 77.5% average humidity with average temperatures of 22.6°C (72.7°F) creates pleasant conditions for outdoor activities year-round. Those sensitive to humidity may find February and March most comfortable, while January tends to feel the most humid.

Question 5

What were the hottest and coldest days in Honolulu in 2024?

Accepted Answer

Honolulu experienced its hottest day of 2024 on September 11, when temperatures reached 28.7°C (83.7°F), while the coldest overnight low occurred on January 14, dropping to 14.6°C (58.3°F).

The temperature extremes in Honolulu during 2024 demonstrate the city's remarkably mild tropical climate. The difference between the year's highest and lowest temperatures was just 14.1°C (25.4°F), reflecting the stabilizing influence of the Pacific Ocean. Throughout 2024, only 14 days saw daytime highs reach or exceed 28°C (82.4°F), with most of these warmer days occurring between late August and mid-September.

On the cooler end, Honolulu recorded 16 days when overnight temperatures dipped below 17°C (62.6°F), primarily during January and February. These "cold" nights are relatively mild compared to mainland standards but represent the coolest conditions visitors will encounter in Honolulu.

The annual average temperature for Honolulu in 2024 was 22.6°C (72.7°F), confirming its reputation as one of the most temperature-stable cities in the United States. For travelers planning visits, this data shows that even during temperature extremes, Honolulu remains comfortable year-round without the dramatic swings seen in continental destinations.

Manoa

Hawaii

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FAQ

What is the annual temperature range in Honolulu?

What is the wettest month in Honolulu?

What are the sunniest months to visit Honolulu?

What is the average humidity in Honolulu throughout the year?

What were the hottest and coldest days in Honolulu in 2024?