Climate averages 1991–2020
Anan weather
in May.
A mild, 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 mild month in Anan: daytime highs average 21.0°C and nights cool to about 16.3°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 165 mm of rain on roughly 11 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 54 min on an average May day.
The nearest other city in this atlas is Tokushima (18 km away). In May its highs average 21.9°C, 0.8°C warmer than Anan, with 191 mm of rain.
Among the 303 cities listed in Japan, Anan ranks joint 211th of 303 for the warmest May highs and 231st of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Anan is 0.3°C cooler than that mean.
From May to June, average highs rise by 2.9°C to 23.9°C, and monthly rainfall rises from 165 mm to 243 mm.
The annual picture
May 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
Anan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.8°C5.3°C | 5.3°C | 78 | 9.4 | 10.210 h |
| February | 10.5°C5.4°C | 5.4°C | 85 | 10.4 | 10.911 h |
| March | 13.4°C7.7°C | 7.7°C | 128 | 11.7 | 12.012 h |
| April | 17.5°C12.0°C | 12.0°C | 137 | 10.6 | 13.013 h |
| May, selected | 21.0°C16.3°C | 16.3°C | 165 | 10.6 | 13.914 h |
| June | 23.9°C20.1°C | 20.1°C | 243 | 13.8 | 14.414 h |
| July | 27.5°C24.0°C | 24.0°C | 187 | 11.8 | 14.214 h |
| August | 28.7°C25.2°C | 25.2°C | 113 | 9.4 | 13.413 h |
| September | 25.9°C22.4°C | 22.4°C | 220 | 13.5 | 12.412 h |
| October | 21.5°C17.6°C | 17.6°C | 212 | 11.2 | 11.411 h |
| November | 16.9°C12.4°C | 12.4°C | 104 | 8.6 | 10.410 h |
| December | 12.1°C7.6°C | 7.6°C | 84 | 8.0 | 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
May in nearby cities
- Tokushima in MayJapan · 18 kmHigh 21.9°C · Low 14.9°C · 191 mm rain
- Minato in MayJapan · 57 kmHigh 21.4°C · Low 14.5°C · 149 mm rain
- Tanabe in MayJapan · 69 kmHigh 22.1°C · Low 16.0°C · 176 mm rain
- Takamatsu in MayJapan · 72 kmHigh 21.3°C · Low 14.9°C · 133 mm rain
- Izumisano in MayJapan · 83 kmHigh 23.3°C · Low 13.9°C · 134 mm rain
- Akashi in MayJapan · 88 kmHigh 21.4°C · Low 14.7°C · 139 mm rain
- Marugame in MayJapan · 90 kmHigh 21.3°C · Low 14.9°C · 130 mm rain
- Kishiwada in MayJapan · 90 kmHigh 22.5°C · Low 13.1°C · 134 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 Anan) is explained once on the Anan year overview and on the Sources, method and limits page.