Weather in Tokyo in April

Daylight on the 15th: 13 h 6 min
Average high: 18 °C (65 °F)
Average low: 9 °C (48 °F)
Precipitation: 137 mm

In April, the area around Tokyo averages daytime highs of 18 °C (65 °F) and night-time lows of 9 °C (48 °F). Days are mild; a light jacket covers most of it.

Temperature

Compared with March, April is warmer by 5 °C in daytime highs, and May is warmer by 5 °C than April. The daily average is 14 °C (56 °F).

Precipitation, humidity and wind

Precipitation averages about 137 mm over the month, with 11 days of at least 1 mm. That is a wet month: pack a rain jacket.

Relative humidity averages 76 % and wind at 2 m about 3.0 m/s.

Daylight

On 15 April the sun rises at 05:08 and sets at 18:14 local time, for 13 h 6 min of daylight, 69 minutes more than a month earlier.

About these numbers

The figures are 2011-2020 averages for the grid cell around Tokyo from the NASA POWER project, a model based data set. They describe the area rather than one weather station, and a single year can differ.

Month by month

Month	High	Low	Precipitation
January	9 °C	1 °C	65 mm
February	10 °C	1 °C	75 mm
March	14 °C	4 °C	120 mm
April	18 °C	9 °C	137 mm
May	23 °C	14 °C	141 mm
June	26 °C	18 °C	198 mm
July	30 °C	23 °C	158 mm
August	31 °C	24 °C	111 mm
September	28 °C	21 °C	223 mm
October	22 °C	15 °C	233 mm
November	17 °C	9 °C	110 mm
December	12 °C	3 °C	68 mm

Questions

How warm is Tokyo in April?

Average highs of 18 °C (65 °F) and lows of 9 °C (48 °F) (2011-2020 averages).

Does it rain a lot in Tokyo in April?

About 137 mm over the month, on 11 days with at least 1 mm.

Travel data for Japan

Sources

NASA Langley Research Center POWER Project, funded through the NASA Earth Science Directorate Applied Science Program (2026-09-22)
Computed from the city coordinates with the NOAA solar position equations
IANA tz database
Wikidata, CC0 (2026-09-22)