Hawaii (Honolulu)
USA · North America
There is no bad time to visit Hawaii (Honolulu) — all twelve months are climatically recommendable. In summer, daytime highs average 31°C (88°F), with peaks around 32°C (90°F); in winter, nights average 21°C (70°F), dropping to around 16°C (61°F) on the coldest. All climate data are based on historical monthly averages (2005–2025) to help you plan the optimal travel time.
Hawaii (Honolulu) – What you should know
Hawaii lies in the middle of the Pacific and has one of the world's most pleasant climates: temperatures between 24°C (75°F) and 31°C (88°F) year-round, moderate humidity and a constant north-easterly trade wind providing cooling. The island group has a slight rainy and dry season, but for beach holidaymakers the difference is barely noticeable — showers are brief and the sky clears quickly.
O'ahu's north shore has spectacular world-class waves in winter (November to March) — fascinating for spectators but dangerous for swimming. The south shores (Waikiki) and resort coasts on Maui (Wailea) offer more reliable beach weather year-round. Each main island has its own microclimate: the Big Island combines desert, rainforest and snow-capped mountains over 4,000 metres (13,123 ft) all in one.
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, ↑ warmestØ day↑ warmest | 27° (81°)28° (82°) | 27° (81°)29° (84°) | 27° (81°)29° (84°) | 28° (82°)30° (86°) | 29° (84°)31° (88°) | 30° (86°)31° (88°) | 31° (88°)32° (90°) | 31° (88°)32° (90°) | 31° (88°)32° (90°) | 30° (86°)31° (88°) | 29° (84°)31° (88°) | 28° (82°)29° (84°) |
Ø night, ↓ coldestØ night↓ coldest | 21° (70°)16° (61°) | 21° (70°)16° (61°) | 21° (70°)17° (63°) | 22° (72°)18° (64°) | 23° (73°)20° (68°) | 24° (75°)21° (70°) | 25° (77°)22° (72°) | 25° (77°)22° (72°) | 25° (77°)22° (72°) | 24° (75°)21° (70°) | 23° (73°)19° (66°) | 22° (72°)18° (64°) |
☀️Sunshine | 7h UV 7 | 7h UV 7 | 7h UV 8 | 8h UV 9 | 8h UV 9 | 9h UV 9 | 9h UV 9 | 9h UV 9 | 9h UV 9 | 8h UV 8 | 7h UV 7 | 5h UV 6 |
🌊Water Temp | 25° (77°) | 25° (77°) | 25° (77°) | 25° (77°) | 26° (79°) | 26° (79°) | 27° (81°) | 27° (81°) | 27° (81°) | 27° (81°) | 26° (79°) | 25° (77°) |
🌧Rain Days | 3d47mm (1.8") | 4d40mm (1.6") | 4d67mm (2.6") | 2d25mm (1.0") | 2d29mm (1.1") | 1d14mm (0.5") | 1d11mm (0.4") | 1d20mm (0.8") | 2d23mm (0.9") | 2d35mm (1.4") | 2d39mm (1.5") | 3d65mm (2.6") |
Best travel timeØ = average · ↑ warmest day · ↓ coldest nightClimate data 2005–2025 · Source: ERA5 + station data
Travel Tips
From March to September, UV levels in Hawaii (Honolulu) reach 9 — very high on the WHO scale. High-SPF sunscreen and shade around midday are essential.
Events & Festivals
April
- Merrie Monarch Festival· varies (week after Easter, April)
The world's most important hula festival, held in Hilo on the Big Island. Since 1963 Hawaii's best hula groups have competed in traditional hula kahiko and modern hula ʻauana. Tickets sell out months in advance.
September
- Aloha Festivals· varies (September, several weeks)
Hawaii's oldest cultural festival (since 1946) celebrates Polynesian tradition with hula, music and one of the islands' biggest free street parties on Kalakaua Avenue in Waikiki. The highlight is the floral parade on the last weekend of September.
Frequently Asked Questions
- When is the best time to visit Hawaii (Honolulu)?
- Hawaii (Honolulu) can be visited year-round: all twelve months meet the criteria of sunshine, temperatures, and low rainfall.
- How warm does it get in Hawaii (Honolulu)?
- In summer, daytime highs in Hawaii (Honolulu) average 31°C (88°F), with peaks around 32°C (90°F); in winter, nights average 21°C (70°F), dropping to around 16°C (61°F) on the coldest.
- How much rain does Hawaii (Honolulu) get?
- Hawaii (Honolulu) has a relatively even rainfall pattern with an average of 2 rain days per month. The driest months are June, July, and August.
- How warm is the water in Hawaii (Honolulu)?
- Water temperature in Hawaii (Honolulu) ranges from 25°C (77°F) (February) to 27°C (81°F) (September). During the best travel months (January, February, March, April, May, June, July, August, September, October, November, and December), the water is most pleasant for swimming.
Best Travel Time by Vacation Type
🏖️
Beach Holiday
Warm, sunny, little rain
MayJunJul
🏙️
City Trip
Pleasantly mild, not too hot
JanFebDec
