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Hawaii, USA

Honolulu (Waikiki) weather in August

Is it warm? Yes. August in Honolulu (Waikiki) is hot: afternoons average 32°C and nights 24°C. Most days (80%) peak between 31°C and 33°C.

Hot · average high

32°C

25°C or more on almost every day.

  • Average low24°overnight
  • Sea27°average, 2022–2025
  • Rainy days328 mm in the month
  • SkySome cloud30% cloud · 66% clear days

How warm it really gets

Every August afternoon from 2011–2025: 465 days. Most (80%) peaked between 31° and 33°.

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

August, year by year

The average August high in each year. The warmest, 2019, averaged 33°C; the coolest, 2011, 31°C.

Average August high by year: 2011: 30.6°C, 2012: 30.6°C, 2013: 31.5°C, 2014: 31.6°C, 2015: 32.6°C, 2016: 31.7°C, 2017: 32.1°C, 2018: 31.5°C, 2019: 32.8°C, 2020: 32°C, 2021: 31.4°C, 2022: 31.9°C, 2023: 31.6°C, 2024: 31.7°C, 2025: 32.2°C.

Compared with home

Average August highs. Expect rain on about 3 days (28 mm in a typical month).

  • Honolulu (Waikiki)32°
  • London24°
  • Manchester20°
  • Dublin20°
  • Cork20°
  • Glasgow19°
  • Belfast19°

Other months

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

Warmer in August, not much further

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

  • Very hot in Aug

    37°C average high

    avg high · 21° at night

    25°C+ on almost every day · often 35°C+

    Seville

    Spain

    Sea
    Inland
    Rain
    0 days
    Sky
    Mostly clear
    From Dublin
    ≈ 2h 45m

  • Hot in Aug

    33°C average high

    avg high · 20° at night

    25°C+ on almost every day

    Olbia & Costa Smeralda

    Sardinia, Italy

    Sea
    26°
    Rain
    2 days
    Sky
    Mostly clear
    From Dublin
    ≈ 2h 45m

  • Hot in Aug

    33°C average high

    avg high · 24° at night

    25°C+ on almost every day

    Hammamet

    Tunisia

    Sea
    28°
    Rain
    1 day
    Sky
    Mostly clear
    From Dublin
    ≈ 3h 15m

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