Climate averages 1991–2020
Hamamatsu weather
in June.
A warm, very wet month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Hamamatsu: daytime highs average 25.1°C and nights cool to about 18.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 258 mm of rain on roughly 16 days, which makes June a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 26 min on an average June day.
The nearest other city in this atlas is Iwata (11 km away). In June its highs average 24.8°C, about as warm as Hamamatsu, with 258 mm of rain.
Among the 303 cities listed in Japan, Hamamatsu ranks joint 110th of 303 for the warmest June highs and joint 249th of 303 for the driest June (rainfall, lowest first). The mean June high of those 303 cities is 24.4°C; Hamamatsu is 0.8°C warmer than that mean.
From June to July, average highs rise by 3.7°C to 28.8°C, and monthly rainfall rises from 258 mm to 273 mm.
The annual picture
June in context
Monthly rainfall
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
Hamamatsu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.5°C1.5°C | 1.5°C | 69 | 5.9 | 10.110 h |
| February | 10.5°C1.6°C | 1.6°C | 90 | 7.0 | 10.911 h |
| March | 13.8°C4.4°C | 4.4°C | 148 | 10.8 | 11.912 h |
| April | 18.3°C9.1°C | 9.1°C | 164 | 11.1 | 13.013 h |
| May | 22.4°C14.0°C | 14.0°C | 184 | 12.0 | 14.014 h |
| June, selected | 25.1°C18.6°C | 18.6°C | 258 | 15.7 | 14.414 h |
| July | 28.8°C22.8°C | 22.8°C | 273 | 16.9 | 14.214 h |
| August | 30.2°C24.0°C | 24.0°C | 157 | 16.2 | 13.513 h |
| September | 27.1°C20.9°C | 20.9°C | 247 | 15.8 | 12.412 h |
| October | 22.1°C15.2°C | 15.2°C | 216 | 12.5 | 11.311 h |
| November | 17.0°C9.2°C | 9.2°C | 122 | 9.2 | 10.410 h |
| December | 11.8°C3.8°C | 3.8°C | 71 | 6.6 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
June in nearby cities
- Iwata in JuneJapan · 11 kmHigh 24.8°C · Low 18.5°C · 258 mm rain
- Hamakita in JuneJapan · 12 kmHigh 25.0°C · Low 18.1°C · 258 mm rain
- Fukuroi in JuneJapan · 18 kmHigh 24.8°C · Low 18.2°C · 271 mm rain
- Kakegawa in JuneJapan · 27 kmHigh 24.5°C · Low 18.3°C · 271 mm rain
- Toyohashi in JuneJapan · 33 kmHigh 25.2°C · Low 18.2°C · 242 mm rain
- Shimada in JuneJapan · 43 kmHigh 23.2°C · Low 18.3°C · 291 mm rain
- Gamagōri in JuneJapan · 48 kmHigh 25.0°C · Low 18.5°C · 232 mm rain
- Fujieda in JuneJapan · 52 kmHigh 23.6°C · Low 18.4°C · 291 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 Hamamatsu) is explained once on the Hamamatsu year overview and on the Sources, method and limits page.
Iwata and Hamakita lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.