Climate Chart of Tokyo, Japan

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

For Tokyo, Japan, the climate data cover 2013–2023. The monthly mean temperature ranges from January at 3.6 °C to August at 27.0 °C, giving a broad picture of the year without describing daytime highs or the conditions on any particular day. Rainfall, sunshine and snowfall add further useful context for planning, while their monthly averages do not guarantee what visitors will encounter during a trip.

Climate overview

Temperature

Monthly mean temperatures are lowest in January, at 3.6 °C, and highest in August, at 27.0 °C. These are averages for each month, not daytime maximum temperatures, so they describe the broad temperature pattern rather than the full range visitors may experience within a day. Across the calendar-month means, the unweighted mean is 15.2 °C. It is a summary of monthly averages, not a day-weighted annual average, and should not be read as a typical temperature for every month.

Rain

Mean daily rainfall is lowest in January, at 1.53 mm/day, making it a conditional option for visitors who prioritise lower average rainfall. This monthly daily mean does not indicate how often rain falls or guarantee dry days. The highest monthly mean daily rainfall occurs in October, at 6.98 mm/day; visitors planning for that month can prepare for the possibility of wetter conditions. The figure is a daily mean, not a monthly total, and does not describe rainfall on every day. The unweighted mean across calendar-month means is 4.17 mm/day, rather than a day-weighted annual average.

Sunshine

Mean daily sunshine reaches its highest value in August, at 9.61 hours/day, while the lowest is in October, at 6.72 hours/day. These averages can help with planning for daylight outdoor activities, but sunshine duration is not the same as day length and does not promise clear skies. The unweighted mean across calendar-month means is 7.96 hours/day.

Snow

The highest monthly mean daily snowfall is recorded in February, at 3.64 mm/day. This is an average amount, not a measure of how many days have snow, snow depth or snow cover, so it cannot establish snow conditions for a particular visit. The unweighted mean across calendar-month means is 0.56 mm/day.

Best Travel Time Guide for Tokyo, Japan: Ideal Seasons and Weather Insights

For visitors prioritising cooler monthly mean temperatures, January is the relevant option, with a mean of 3.6 °C; this is not a daytime high and cannot describe day-to-day variation. Those prioritising lower average rainfall can consider January, where mean daily rainfall is 1.53 mm/day, but that average neither guarantees dry weather nor measures rain frequency. For rain preparation, October has the highest monthly mean daily rainfall, at 6.98 mm/day, so visitors may wish to plan for possible wet conditions rather than assume every day will be rainy. Outdoor sightseeing planners may also use sunshine averages as a guide: the highest mean daily duration is in August at 9.61 hours/day, and the lowest is in October at 6.72 hours/day. These values describe sunshine duration, not daylight length or guaranteed conditions.

Snowfall averages are another limited planning reference: the highest monthly mean daily amount is in February, at 3.64 mm/day. It does not show how many snowy days to expect or establish snow depth or cover, so it cannot by itself indicate conditions for snow-based activities.

Climate Data Overview for Tokyo, Japan

Explore the comprehensive climate data for Tokyo, Japan. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

Month	Average: Temperature °C	Rain (mm) / day	Snow (mm) / day	Sunshine (h) / day
Jan	3.6	1.53	2.12	7.47
Feb	4.7	1.82	3.64	7.89
Mar	9.3	3.82	0.71	7.90
Apr	13.5	4.46	0.01	8.63
May	18.5	3.70	0.00	9.17
Jun	21.8	6.09	0.00	7.91
Jul	25.7	5.82	0.00	8.48
Aug	27.0	4.10	0.00	9.61
Sep	23.1	6.67	0.00	7.47
Oct	17.3	6.98	0.00	6.72
Nov	11.9	2.98	0.19	7.01
Dec	6.2	2.11	0.05	7.26
Average	15.2	4.17	0.56	7.96