Hawaii weather by month
Five stations across four islands, all near sea level — the leeward-versus-windward difference shows up here, but upcountry and volcano-summit weather is another world these numbers don’t reach.
Based on 5 weather stations.
The year across Hawaii
| Month | Highs | Nights | Wet days |
|---|---|---|---|
| January | 79–82° | 64–69° | 2–10 |
| February | 78–82° | 64–68° | 2–11 |
| March | 79–83° | 65–70° | 2–15 |
| April | 79–85° | 66–71° | 2–17 |
| May | 81–87° | 67–73° | 2–14 |
| June | 82–88° | 69–74° | 0–17 |
| July | 83–89° | 70–75° | 1–19 |
| August | 83–90° | 70–76° | 1–18 |
| September | 83–90° | 70–75° | 1–15 |
| October | 82–89° | 69–75° | 2–17 |
| November | 80–86° | 68–72° | 1–17 |
| December | 79–83° | 66–70° | 2–16 |
A single row can hide a real spread — open a month to see it region by region.
Oahu
- Honolulu The trade winds do the air conditioning here, and the only real seasons are wetter and drier.
Maui
- Kahului (Maui) The trade winds funnel between the volcanoes and across the isthmus, which is why the afternoons blow hard and the weather changes by the mile.
Kauai
- Lihue (Kauai) Kauai wrings the rain out of the trade winds, so the island stays green all year and the showers rarely last long enough to change your plans.
Big Island, Kona side
- Kailua-Kona The dry side of the Big Island, where the mountains wring the rain out of the trade winds long before they reach the coast.
Big Island, Hilo side
- Hilo One of the wettest towns in the country and one of the greenest — the rain here is warm, frequent, and completely beside the point once you adjust to it.