Climate averages 1991–2020
Hakodate weather
in May.
A cool, wet month: the 6th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a cool month in Hakodate: daytime highs average 13.9°C and nights cool to about 7.7°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 119 mm of rain on roughly 12 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 31 min on an average May day.
The nearest other city in this atlas is Muroran (64 km away). In May its highs average 13.2°C, 0.7°C cooler than Hakodate, with 112 mm of rain.
Among the 303 cities listed in Japan, Hakodate ranks 300th of 303 for the warmest May highs and 40th of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Hakodate is 7.5°C cooler than that mean.
From May to June, average highs rise by 4.0°C to 17.8°C, and monthly rainfall rises from 119 mm to 121 mm.
The annual picture
May in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Hakodate climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.5°C-5.0°C | -5.0°C | 52 | 9.2 | 9.510 h |
| February | 0.1°C-5.1°C | -5.1°C | 52 | 8.0 | 10.611 h |
| March | 3.5°C-2.2°C | -2.2°C | 66 | 9.6 | 11.912 h |
| April | 8.9°C2.4°C | 2.4°C | 83 | 9.8 | 13.313 h |
| May, selected | 13.9°C7.7°C | 7.7°C | 119 | 11.6 | 14.515 h |
| June | 17.8°C12.6°C | 12.6°C | 121 | 11.6 | 15.215 h |
| July | 21.6°C17.3°C | 17.3°C | 178 | 14.9 | 14.915 h |
| August | 23.7°C19.7°C | 19.7°C | 206 | 14.8 | 13.914 h |
| September | 21.3°C16.9°C | 16.9°C | 185 | 12.8 | 12.513 h |
| October | 15.3°C10.4°C | 10.4°C | 114 | 11.4 | 11.111 h |
| November | 8.1°C3.3°C | 3.3°C | 87 | 11.0 | 9.910 h |
| December | 2.1°C-2.2°C | -2.2°C | 70 | 10.5 | 9.29 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Muroran in MayJapan · 64 kmHigh 13.2°C · Low 7.0°C · 112 mm rain
- Aomori in MayJapan · 107 kmHigh 18.5°C · Low 8.7°C · 101 mm rain
- Tomakomai in MayJapan · 119 kmHigh 12.7°C · Low 6.7°C · 109 mm rain
- Hirosaki in MayJapan · 133 kmHigh 18.7°C · Low 8.0°C · 104 mm rain
- Chitose in MayJapan · 138 kmHigh 14.1°C · Low 6.5°C · 95 mm rain
- Eniwa in MayJapan · 142 kmHigh 15.0°C · Low 6.2°C · 84 mm rain
- Sapporo in MayJapan · 152 kmHigh 16.1°C · Low 6.7°C · 93 mm rain
- Hachinohe in MayJapan · 156 kmHigh 18.3°C · Low 9.2°C · 88 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Hakodate) is explained once on the Hakodate year overview and on the Sources, method and limits page.