Hakodate weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: June – September
What is the weather like in Hakodate in August?
In August, Hakodate is warm: daytime highs average 24 °C, and even at night it stays warm at around 20 °C. The sea averages 23.0 °C – pleasant for swimming. Expect around 5 hours of sunshine a day. It rains often – on about 14 days, adding up to 186 mm. The air is often humid and muggy. All in all, August is a good month for a holiday in Hakodate.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 65 | 65 | 70 |
| Day | 22° | 24° | 22° |
| Night | 18° | 20° | 17° |
| Sea | 19° | 23° | 23° |
| Sun | 4 h | 5 h | 5 h |
| Rain days | 13 | 14 | 12 |
More details for August
- Daylight
- 13 h 55 min04:45 – 18:39
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 22 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 73 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %30 %
- Few rainy daysweight 30 %29 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Insect repellent
- Rain jacket or umbrella
Hakodate in August: quick answers
Is Hakodate hot in August?
Warm rather than hot: in August, daytime highs in Hakodate average 24 °C and nights cool to about 20 °C.
Can you swim in Hakodate in August?
Yes. In August the sea averages 23.0 °C – pleasant for swimming.
Does it rain much in Hakodate in August?
It rains often – on about 14 days, adding up to 186 mm.
Hakodate month by month
The whole year in HakodateAll destinations: JapanWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences