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Oahu

Oahu is the most developed tourist island in the Hawaiian Islands, with rich natural scenery and diverse cultural attractions. Whether it's surfing, shopping or exploring history and culture, you can find what you need here. The climate in Hawaii is like summer all year round. In winter, you can avoid the cold and enjoy the warm sunshine, and in summer, you can enjoy the sun and beach life.

Oahu Top 10 Activities

Top things to do in Oahu

Best time to visit Oahu

Data source: Meteostat・Last updated: 2025-09

Weather in Oahu throughout the year

Spring (March–May): Average 21.3–22.4°C, mild and comfortable climate, moderate rainfall with occasional showers. Popular activities: snorkeling, surfing, beach walks. Recommended clothing: light, breathable long-sleeved shirts, shorts, sandals.

Summer (June–August): Average 23.6–24.5°C, hot and dry climate, very little rainfall. Popular activities: swimming, sunbathing, surfing, water sports. Recommended clothing: swimwear, light short-sleeved shirts, shorts, sandals, sun protective clothing.

Autumn (September–November): Average 23.8–22.7°C, warm and comfortable climate, rainfall gradually increases. Popular activities: hiking, sightseeing, enjoying outdoor activities. Recommended clothing: light long-sleeved shirts, long pants, comfortable shoes.

Winter (December–February): Average 20.6–21.7°C, mild climate, more rainfall, but still suitable for outdoor activities. Popular activities: whale watching (seasonal), beach walks, exploring historical sites. Recommended clothing: light jacket, long-sleeved shirts, long pants.

Weather in Oahu

Annual average temperature: approx. 22.6°C / Annual rainfall: approx. 310 mm / Summer humidity: 60%–70% / Rainiest month: January

Oahu weather by month

MonthJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Temperature20.7°C20.6°C21.3°C21.8°C22.4°C23.6°C23.9°C24.5°C24.4°C23.8°C22.7°C21.7°C
Rainfall (mm)79.73027.730.859.344351623.327.5

7-day weather forecast for Oahu

Date11/5Thursday11/6Friday11/7Saturday11/8Sunday11/9Monday11/10Tuesday11/11Wednesday
WeatherPatchy rain nearbyPatchy rain nearbyPatchy rain nearbyPatchy rain nearbyPatchy rain nearbyPatchy rain nearbyPatchy rain nearby
High25°C24.3°C24.5°C24.2°C25°C23.7°C24.2°C
Low21°C21.2°C20.3°C20.2°C20.8°C20.9°C21.5°C

Oahu travel FAQs and useful info

How many days are recommended for visiting Oahu?

It is recommended to allocate at least three days to explore Oahu. This allows for a deeper experience of the island's rich attractions and activities, and makes full use of travel passes like the Oahu Card. If you have more time, five to seven days will allow you to fully enjoy your vacation.

How to travel from Oahu to the Big Island of Hawaii?

The most common way to travel to the Big Island of Hawaii is to first fly to Honolulu International Airport (HNL) on Oahu, and then take a short flight of about 35 to 40 minutes to Kona International Airport (KOA) or Hilo International Airport (ITO) on the Big Island.

What is the best season to visit Hawaii?

Hawaii has pleasant weather year-round, with average temperatures between 23 to 29 degrees Celsius. Mid-April to mid-June and September to mid-December are considered the best times to visit, with comfortable weather and fewer crowds, making it a great period for independent travel and finding deals. If you wish to go whale watching, it is recommended to visit from January to early April.

Which Hawaiian island is the most fun?

Oahu is the most visited island in Hawaii, known for its highly commercialized atmosphere, diverse dining and entertainment options, and convenient public transportation system. If you prefer more natural scenery, Maui and the Big Island, second only to Oahu in size, are also good choices.

What are the must-visit attractions on Oahu?

Oahu boasts numerous world-class attractions, including the historic Pearl Harbor, the world-famous Waikiki Beach, and the surfing paradise of the North Shore. Additionally, the Diamond Head hike and Hanauma Bay snorkeling are excellent spots to experience Oahu's natural beauty.