Climate averages 1991–2020
Kochi weather
in May.
A warm, very wet month: the 5th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Kochi: daytime highs average 22.8°C and nights cool to about 14.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 242 mm of rain on roughly 13 days, which makes May a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 53 min on an average May day.
The nearest other city in this atlas is Shikokuchūō (47 km away). In May its highs average 23.0°C, about as warm as Kochi, with 170 mm of rain.
Among the 303 cities listed in Japan, Kochi ranks joint 45th of 303 for the warmest May highs and 303rd of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Kochi is 1.4°C warmer than that mean.
From May to June, average highs rise by 2.7°C to 25.4°C, and monthly rainfall rises from 242 mm to 358 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
Kochi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.5°C2.1°C | 2.1°C | 72 | 6.3 | 10.210 h |
| February | 10.7°C2.3°C | 2.3°C | 100 | 8.1 | 11.011 h |
| March | 14.2°C4.8°C | 4.8°C | 164 | 11.5 | 12.012 h |
| April | 18.8°C9.2°C | 9.2°C | 203 | 11.6 | 13.013 h |
| May, selected | 22.8°C14.1°C | 14.1°C | 242 | 13.2 | 13.914 h |
| June | 25.4°C18.7°C | 18.7°C | 358 | 19.1 | 14.314 h |
| July | 28.9°C22.9°C | 22.9°C | 374 | 21.6 | 14.114 h |
| August | 29.6°C23.6°C | 23.6°C | 297 | 20.6 | 13.413 h |
| September | 26.8°C20.6°C | 20.6°C | 323 | 17.1 | 12.412 h |
| October | 22.2°C14.9°C | 14.9°C | 230 | 11.2 | 11.411 h |
| November | 17.0°C9.1°C | 9.1°C | 118 | 8.4 | 10.510 h |
| December | 11.7°C4.2°C | 4.2°C | 90 | 6.3 | 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
May in nearby cities
- Shikokuchūō in MayJapan · 47 kmHigh 23.0°C · Low 15.0°C · 170 mm rain
- Shinagawa in MayJapan · 50 kmHigh 22.5°C · Low 13.8°C · 174 mm rain
- Niihama in MayJapan · 50 kmHigh 22.8°C · Low 15.1°C · 158 mm rain
- Saijō in MayJapan · 52 kmHigh 23.8°C · Low 15.6°C · 158 mm rain
- Imabari in MayJapan · 76 kmHigh 21.8°C · Low 15.6°C · 156 mm rain
- Matsuyama in MayJapan · 78 kmHigh 23.1°C · Low 15.2°C · 154 mm rain
- Marugame in MayJapan · 85 kmHigh 21.3°C · Low 14.9°C · 130 mm rain
- Uwajima in MayJapan · 97 kmHigh 23.4°C · Low 15.9°C · 150 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 Kochi) is explained once on the Kochi year overview and on the Sources, method and limits page.