United States
Things to do in Oahu
Snorkeling, scuba diving and atv tours and more, with the best month for each. Oahu is most comfortable for sightseeing in December to May.
Photo: Ossewa, CC BY-SA 4.0
- Snorkeling
- Scuba diving
- ATV tours
- Helicopter tours
- Sunset cruises
- Zipline tours
- Private tours
- Bike tours
Popular tours in Oahu
Oahu: Grand Tour Around Island with SnorkelingFrom $89View 
Oahu: Full or Half Day Grand Circle Island TourFrom $100View 
Pearl Harbor USS Arizona Memorial Tour from WaikikiFrom $55View 
Oahu Catamaran Snorkel Tour: See Turtles 100% GuaranteedFrom $50View 
Oahu Circle Island Snorkeling Tour: Dole, Pali Lookout & MoreFrom $118View 
Oahu Grand Circle Island Experience from WaikikiFrom $99View
Tours from Viator. Good Outing may earn a commission when you book, at no cost to you.
What to book in Oahu
Oahu month by month
Oahu weather by month
Averages for Honolulu International Airport. Highlighted months are the most comfortable for sightseeing.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F (°C) | 80 (27) | 80 (27) | 81 (27) | 83 (28) | 85 (29) | 87 (31) | 88 (31) | 89 (32) | 88 (31) | 87 (31) | 84 (29) | 82 (28) |
| Low °F (°C) | 67 (19) | 67 (20) | 68 (20) | 70 (21) | 71 (22) | 74 (23) | 75 (24) | 76 (24) | 75 (24) | 74 (23) | 72 (22) | 69 (21) |
| Rainy days | 8 | 8 | 9 | 8 | 6 | 6 | 7 | 6 | 7 | 8 | 9 | 9 |
| Sea °F (°C) | 76 (24) | 75 (24) | 75 (24) | 76 (24) | 77 (25) | 78 (26) | 79 (26) | 80 (27) | 80 (27) | 80 (27) | 79 (26) | 77 (25) |
| Sunset (15th) | 6:10 pm | 6:29 pm | 6:41 pm | 6:51 pm | 7:03 pm | 7:15 pm | 7:17 pm | 7:03 pm | 6:35 pm | 6:08 pm | 5:50 pm | 5:52 pm |
Questions
When is the best time to visit Oahu?
For walking around and sightseeing, December to May. August is the warmest month at about 89°F (32°C), and January the coolest at about 80°F (27°C).
What is the rainiest month in Oahu?
December, with about 9 rainy days. Book outdoor tours early in your stay that month, so there's room to move them.
When is the sea warmest in Oahu?
September, at about 80°F (27°C). It's coolest in March, at about 75°F (24°C).