Hawaii weather in January
The state broadly agrees with itself in January: afternoons run 82° in Kahului (Maui) and 79° in Lihue (Kauai), 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 81°, nights around 67°, and 1.8 in of rain in a typical January.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Honolulu | 81° / 67° | 3 | Wet season on paper; sunshine most days in practice. |
Maui
Highs near 82°, nights around 64°, and 2.4 in of rain in a typical January.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Kahului (Maui) | 82° / 64° | 4 | The month the ocean is more interesting than the beach. |
Kauai
Highs near 79°, nights around 66°, and 2.8 in of rain in a typical January.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Lihue (Kauai) | 79° / 66° | 4 | Green beyond reason, and the north shore starts roaring. |
Big Island, Kona side
Highs near 81°, nights around 69°, and 1.4 in of rain in a typical January.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Kailua-Kona | 81° / 69° | 2 | Winter here means a sweater you brought and never wore. |
Big Island, Hilo side
Highs near 79°, nights around 64°, and 7.9 in of rain in a typical January.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Hilo | 79° / 64° | 10 | Rain on the roof, warm air underneath it. |
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.