Hawaii weather in December
The state broadly agrees with itself in December: afternoons run 83° in Kahului (Maui) and 79° in Hilo, with everywhere else in between.
Based on 5 weather stations. 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.
Oahu
Highs near 82°, nights around 69°, and 2.2 in of rain in a typical December.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Honolulu | 82° / 69° | 3 | Sunset before dinner, swimsuit still damp on the rail. |
Maui
Highs near 83°, nights around 66°, and 2.8 in of rain in a typical December.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Kahului (Maui) | 83° / 66° | 4 | Rain most likely now — and so are the humpbacks. |
Kauai
Highs near 79°, nights around 69°, and 4.6 in of rain in a typical December.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Lihue (Kauai) | 79° / 69° | 7 | Dark by dinner, wet by nature, warm regardless. |
Big Island, Kona side
Highs near 82°, nights around 70°, and 1.1 in of rain in a typical December.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Kailua-Kona | 82° / 70° | 2 | Dark early, warm always — Christmas in flip-flops. |
Big Island, Hilo side
Highs near 79°, nights around 66°, and 12.1 in of rain in a typical December.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Hilo | 79° / 66° | 16 | Short days, long rains, and not a cold night anywhere. |
Each place above has its own page for the full story — what the month feels like, what to pack, and whether the timing is right.