Climate averages 1991–2020
Sasebo weather
in July.
A hot, very wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Sasebo: daytime highs average 28.6°C and nights cool to about 24.1°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 285 mm of rain on roughly 16 days, which makes July a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 07 min on an average July day.
The nearest other city in this atlas is Ōmura (35 km away). In July its highs average 28.4°C, about as warm as Sasebo, with 309 mm of rain.
Among the 303 cities listed in Japan, Sasebo ranks joint 112th of 303 for the warmest July highs and joint 270th of 303 for the driest July (rainfall, lowest first). The mean July high of those 303 cities is 27.9°C; Sasebo is 0.8°C warmer than that mean.
From July to August, average highs rise by 1.5°C to 30.1°C, and monthly rainfall falls from 285 mm to 178 mm.
The annual picture
July 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
Sasebo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.3°C5.1°C | 5.1°C | 60 | 8.3 | 10.210 h |
| February | 10.5°C5.3°C | 5.3°C | 75 | 8.5 | 11.011 h |
| March | 13.7°C7.7°C | 7.7°C | 118 | 10.5 | 12.012 h |
| April | 18.2°C11.6°C | 11.6°C | 138 | 10.3 | 13.013 h |
| May | 22.4°C15.9°C | 15.9°C | 149 | 10.1 | 13.914 h |
| June | 25.3°C19.9°C | 19.9°C | 308 | 15.7 | 14.314 h |
| July, selected | 28.6°C24.1°C | 24.1°C | 285 | 16.3 | 14.114 h |
| August | 30.1°C25.2°C | 25.2°C | 178 | 14.7 | 13.413 h |
| September | 27.0°C22.0°C | 22.0°C | 186 | 12.3 | 12.412 h |
| October | 22.3°C17.2°C | 17.2°C | 102 | 6.9 | 11.411 h |
| November | 17.0°C12.2°C | 12.2°C | 90 | 8.1 | 10.510 h |
| December | 11.7°C7.3°C | 7.3°C | 69 | 7.5 | 10.010 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
July in nearby cities
- Ōmura in JulyJapan · 35 kmHigh 28.4°C · Low 24.4°C · 309 mm rain
- Karatsu in JulyJapan · 38 kmHigh 29.1°C · Low 24.1°C · 260 mm rain
- Isahaya in JulyJapan · 47 kmHigh 27.5°C · Low 23.6°C · 346 mm rain
- Nagasaki in JulyJapan · 49 kmHigh 27.4°C · Low 24.3°C · 346 mm rain
- Saga in JulyJapan · 54 kmHigh 29.0°C · Low 23.0°C · 309 mm rain
- Itoshima in JulyJapan · 60 kmHigh 28.9°C · Low 24.1°C · 262 mm rain
- Maebaru-chūō in JulyJapan · 62 kmHigh 28.3°C · Low 23.9°C · 262 mm rain
- Ōmuta in JulyJapan · 69 kmHigh 28.8°C · Low 23.3°C · 330 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 Sasebo) is explained once on the Sasebo year overview and on the Sources, method and limits page.