Climate averages 1991–2020

Tajimi weather
in May.

A warm, wet month: the 5th warmest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 22.2°C Daytime mean, May
Average low 12.0°C Night-time mean, May
Rainfall 178 mm 13 days with ≥1 mm
Daylight 14 h Sunrise to sunset, per day
Every month in Tajimi · average highYear overview

May is a warm month in Tajimi: daytime highs average 22.2°C and nights cool to about 12.0°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 178 mm of rain on roughly 13 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 00 min on an average May day.

The nearest other city in this atlas is Seto (10 km away). In May its highs average 22.5°C, about as warm as Tajimi, with 144 mm of rain.

Among the 303 cities listed in Japan, Tajimi ranks joint 107th of 303 for the warmest May highs and joint 264th of 303 for the driest May (rainfall, lowest first). The mean May high of those 303 cities is 21.3°C; Tajimi is 0.9°C warmer than that mean.

From May to June, average highs rise by 3.1°C to 25.3°C, and monthly rainfall rises from 178 mm to 234 mm.

The annual picture

May in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -505101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 3000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Tajimi climate table

1991–2020
Monthly climate averages for Tajimi, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 7.3°C-1.5°C-1.5°C698.110.110 h
February 8.5°C-1.3°C-1.3°C818.010.911 h
March 12.5°C1.5°C1.5°C13911.511.912 h
April 17.6°C6.6°C6.6°C15212.013.113 h
May, selected 22.2°C12.0°C12.0°C17812.514.014 h
June 25.3°C17.0°C17.0°C23416.614.514 h
July 28.6°C21.4°C21.4°C26818.614.314 h
August 30.2°C22.4°C22.4°C16816.213.513 h
September 26.6°C18.8°C18.8°C23215.012.412 h
October 21.0°C12.4°C12.4°C20012.311.311 h
November 15.3°C5.8°C5.8°C1068.910.310 h
December 9.7°C0.6°C0.6°C707.59.810 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

Distance from Tajimi

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tajimi) is explained once on the Tajimi year overview and on the Sources, method and limits page.