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Oahu

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Travel Info
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Travel Info

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Oahu Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Oahu year round climate

  • Spring (March–May): Average 70–72°F, 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 74–76°F, 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 74–72°F, 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 69–71°F, 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.

Oahu climatological average

Annual average temperature: approx. 72.7°F / Annual rainfall: approx. 310 mm / Summer humidity: 60%–70% / Rainiest month: January

Oahu monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
69.3°F
79.7
February
69.1°F
30
March
70.3°F
27.7
April
71.2°F
30.8
May
72.3°F
59.3
June
74.5°F
4
July
75°F
4
August
76.1°F
3
September
75.9°F
5
October
74.8°F
16
November
72.9°F
23.3
December
71.1°F
27.5

Oahu weather for the next seven days

5/4
Monday
Patchy rain nearby
76.9°F/68.4°F
5/5
Tuesday
Patchy rain nearby
80.2°F/70.8°F
5/6
Wednesday
Patchy rain nearby
81.1°F/68.4°F
5/7
Thursday
Patchy rain nearby
80°F/68.6°F
5/8
Friday
Patchy rain nearby
81°F/68.4°F
5/9
Saturday
Patchy rain nearby
77°F/68.7°F
5/10
Sunday
Patchy rain nearby
77°F/69°F

Oahu Frequently Asked Questions and Useful Information for Travel

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.