Kailua-Kona weather by month & the best time to visit
🇺🇸 United States · beach resort · tropical — wet & dry seasons climate
The best time to visit Kailua-Kona is June — its sunniest month (Sunshine Score 90/100), with September and July close behind. Kailua-Kona averages about 3,315 hours of sunshine a year. Daytime highs around 26°C / 79°F and roughly 50 mm of rain in June.
Jump to: month-by-month table · sea temperature · nearby alternatives · embed this data
- Sun hours / year
- 3,315
- Sunniest month
- June
- Peak score
- 90/100
- Rain / year
- 938 mm
- Midday UV at peak
- 12 (extreme)
- Sea at warmest
- 28°C / 82°F
- Elevation
- 13 m
When is the best time to visit Kailua-Kona?
For sunshine, the best time to visit Kailua-Kona is June, then September and July. The dullest month is March (74/100, 134 mm of rain). The full month-by-month picture is in the table below.
How sunny is Kailua-Kona?
Kailua-Kona is one of the sunniest places on Earth: about 3,315 hours of sunshine a year. June (90/100) is noticeably better than March (74). It ranks #47 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 938 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 84 | 25° / 77°F | 24° / 75°F | 81 mm | 7 | 26° / 79°F |
| February | 83 | 25° / 77°F | 24° / 75°F | 88 mm | 9 | 26° / 79°F |
| March | 74 | 25° / 77°F | 24° / 75°F | 134 mm | 10 | 26° / 79°F |
| April | 83 | 25° / 77°F | 24° / 75°F | 85 mm | 11 | 25° / 77°F |
| May | 87 | 26° / 79°F | 24° / 75°F | 66 mm | 11 | 26° / 79°F |
| June | 90 | 26° / 79°F | 25° / 77°F | 50 mm | 11 | 27° / 81°F |
| July | 89 | 27° / 81°F | 26° / 79°F | 53 mm | 12 | 27° / 81°F |
| August | 85 | 27° / 81°F | 26° / 79°F | 74 mm | 12 | 28° / 82°F |
| September | 90 | 27° / 81°F | 26° / 79°F | 49 mm | 11 | 28° / 82°F |
| October | 87 | 27° / 81°F | 26° / 79°F | 67 mm | 10 | 28° / 82°F |
| November | 82 | 27° / 81°F | 26° / 79°F | 93 mm | 8 | 27° / 81°F |
| December | 81 | 26° / 79°F | 25° / 77°F | 98 mm | 7 | 26° / 79°F |
Sea temperature in Kailua-Kona by month
The sea off Kailua-Kona is warmest in August at around 28°C / 82°F, and coolest in April at 25°C / 77°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Kailua-Kona on the interactive sunshine globe →
Nearby places for sunshine
- Hilo United States · 105 km · best in Jun · 2,716 h sun/yr
- Kahului United States · 135 km · best in Jun · 3,218 h sun/yr
- Honolulu United States · 263 km · best in Jun · 3,113 h sun/yr
- Lihue, Kauai United States · 423 km · best in Jun · 3,311 h sun/yr
- San Francisco United States · 3,808 km · best in Sep · 2,879 h sun/yr
- Monterey United States · 3,811 km · best in Aug · 3,366 h sun/yr
Nearest destinations
- Waimea (Kamuela) United States · 49 km · 3,019 h sun/yr · best in Jun
- Hana United States · 118 km · 3,218 h sun/yr · best in Jun
- Lanai City United States · 150 km · 3,218 h sun/yr · best in Jun
- Lahaina United States · 151 km · 3,218 h sun/yr · best in Jun
Head-to-head
How Kailua-Kona compares month by month: Kailua-Kona vs Honolulu · Kailua-Kona vs Kahului · Kailua-Kona vs Lihue, Kauai · Kailua-Kona vs Hilo · all comparisons
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