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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Coast Brief Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Plan for warm, humid days and passing showers if you visit Hawaii in December, with sea temperatures that are fine for swimming—just book a room on the leeward side for the sunniest stay.
What’s the weather actually like in Hawaii during December?
December is part of Hawaii’s wetter season, yet the islands still deliver plenty of sunshine. Trade winds keep humidity in check, and the live forecast above shows typical highs.
- Daytime temperatures generally sit between 26–30°C (hawaii weather december in celsius is around 27°C at the coast).
- Night lows rarely drop below 20°C, so evenings stay balmy.
- Rainfall is highest on windward (north/east) slopes; leeward sides—especially the Kohala Coast and Wailea—are drier.
- Sea surface temperatures hover near 24–26°C; yes, you can swim in Hawaii in December without a wetsuit.
Which island should you pick for a December trip?
That depends on whether you prioritise dry weather, surf, or a mix of both. (Which island to visit in Hawaii in December often comes down to choosing a leeward location.)
- Maui (Kihei/Wailea side) and the Big Island’s west coast are typically sunniest.
- Oahu’s south shore—Waikiki—has good weather and plenty of accommodation; honolulu weather december celsius averages around 27°C.
- Kauai’s north shore is wet; the south (Poipu) is better for avoiding rain.
- Surf season peaks: north shores of Oahu and Maui get huge swells, while south shores remain calmer for swimming.
Is December a good time to visit Hawaii?
Yes, if you don’t mind occasional showers. Crowds are high around Christmas, but the weather is still pleasant. For hawaii weather december january planning, note that January is similarly mild with slightly more rain in some areas.
Can you swim in Hawaii in December?
Absolutely. The ocean is warm enough—around 25°C—and leeward beaches offer calm conditions. Avoid north shores during big winter swells unless you are an experienced surfer.
What should I pack for Hawaii in December?
Light layers, a rain jacket, swimwear, and reef-safe sunscreen. Evenings are mild, so a light jumper or pashmina is useful. Sandals or reef shoes are fine for most activities.
Sources
For more Australian holiday planning, see our Australia weather hub or check 10-day forecasts. If you are weighing up tropical alternatives, our Phuket weather month guide may help.