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Hawaii, USA

Honolulu (Waikiki) weather in December

Is it warm? Yes. December in Honolulu (Waikiki) is warm: afternoons average 28°C and nights 21°C. Most days (80%) peak between 27°C and 29°C.

Warm · average high

28°C

25°C or more on almost every day.

  • Average low21°overnight
  • Sea26°average, 2022–2025
  • Rainy days545 mm in the month
  • SkySome cloud40% cloud · 49% clear days

How warm it really gets

Every December afternoon from 2011–2025: 465 days. Most (80%) peaked between 27° and 29°.

Number of December days by daily high, 2011–2025.

December, year by year

The average December high in each year. The warmest, 2024, averaged 29°C; the coolest, 2017, 27°C.

Average December high by year: 2011: 26.9°C, 2012: 27.7°C, 2013: 28.1°C, 2014: 27.4°C, 2015: 28.2°C, 2016: 27.4°C, 2017: 26.7°C, 2018: 27.8°C, 2019: 28.7°C, 2020: 29°C, 2021: 27.3°C, 2022: 28.3°C, 2023: 27.7°C, 2024: 29.1°C, 2025: 28.6°C.

Compared with home

Average December highs. Expect rain on about 5 days (45 mm in a typical month).

  • Honolulu (Waikiki)28°
  • Cork10°
  • London10°
  • Dublin9°
  • Belfast9°
  • Manchester9°
  • Glasgow8°

Other months

Honolulu (Waikiki) all year · Where else is hot in December

Warmer in December, not much further

Flying times are estimates from Dublin; Honolulu (Waikiki) is about 14h 15m.

  • Very hot in Dec

    33°C average high

    avg high · 20° at night

    25°C+ on almost every day

    The Gambia

    The Gambia

    Sea
    24°
    Rain
    0 days
    Sky
    Often cloudy
    From Dublin
    ≈ 6h

  • Hot in Dec

    29°C average high

    avg high · 24° at night

    25°C+ on almost every day

    Antigua

    Caribbean

    Sea
    28°
    Rain
    10 days
    Sky
    Some cloud
    From Dublin
    ≈ 8h

  • Hot in Dec

    30°C average high

    avg high · 24° at night

    25°C+ on almost every day

    Barbados

    Caribbean

    Sea
    28°
    Rain
    11 days
    Sky
    Some cloud
    From Dublin
    ≈ 8h 30m

Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Honolulu airport. Sea: Copernicus ERA5, 2022–2025. Rainy days = days with 1 mm of rain or more, as weather stations count them. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology