Climate averages 1991–2020

Uruma weather
in January.

A mild, wet month: the coolest and the 3rd driest of the year.

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

Average high 18.5°C Daytime mean, January

Average low 16.2°C Night-time mean, January

Rainfall 103 mm 12 days with ≥1 mm

Daylight 11 h Sunrise to sunset, per day

January is a mild month in Uruma: daytime highs average 18.5°C and nights cool to about 16.2°C. By daytime temperature it is the coolest month of the year.

Expect about 103 mm of rain on roughly 12 days, which makes January a wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 41 min on an average January day.

The nearest other city in this atlas is Okinawa (7 km away). In January its highs average 18.0°C, 0.5°C cooler than Uruma, with 103 mm of rain.

Among the 303 cities listed in Japan, Uruma ranks 2nd of 303 for the warmest January highs and joint 269th of 303 for the driest January (rainfall, lowest first). The mean January high of those 303 cities is 7.0°C; Uruma is 11.6°C warmer than that mean.

From January to February, average highs rise by 0.1°C to 18.7°C, and monthly rainfall falls from 103 mm to 99 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

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

Every month, side by side

Uruma climate table

1991–2020

Monthly climate averages for Uruma, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	18.5°C16.2°C	16.2°C	103	12.0	10.711 h
February	18.7°C16.2°C	16.2°C	99	11.7	11.211 h
March	20.1°C17.5°C	17.5°C	134	13.2	12.012 h
April	22.1°C19.8°C	19.8°C	158	13.2	12.813 h
May	24.5°C22.5°C	22.5°C	207	14.1	13.413 h
June	27.1°C25.4°C	25.4°C	224	15.5	13.814 h
July	28.9°C27.1°C	27.1°C	124	10.8	13.614 h
August	29.0°C27.1°C	27.1°C	175	14.4	13.113 h
September	28.0°C26.2°C	26.2°C	188	13.4	12.312 h
October	25.9°C24.2°C	24.2°C	139	11.8	11.612 h
November	23.3°C21.5°C	21.5°C	100	10.7	10.911 h
December	20.2°C18.1°C	18.1°C	110	11.3	10.511 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

January in nearby cities

Distance from Uruma

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 Uruma) is explained once on the Uruma year overview and on the Sources, method and limits page.