Tokyo Climate — Average Highs, Lows & Rainfall by Month
Tokyo has a temperate climate with four distinct seasons. Daytime temperatures average 33°C / 91°F in August, the warmest month, and drop to 9°C / 49°F in January, the coldest. Overnight lows in January average 0°C / 32°F. Tokyo receives about 1570 mm of rain a year across roughly 131 wet days, with September the wettest month.
Averages for 2021–2025 · Open-Meteo Historical Weather API (ERA5 reanalysis) · Updated 2026-10-05
Monthly averages in Tokyo
Average daytime high, overnight low and rainfall for each month of the year.
| Month | Avg high | Avg low | Rainfall | Wet days |
|---|---|---|---|---|
| January | 9°C / 49°F | 0°C / 32°F | 35 mm | 5 |
| February | 11°C / 52°F | 1°C / 34°F | 54 mm | 6 |
| March | 15°C / 60°F | 6°C / 42°F | 156 mm | 12 |
| April | 20°C / 67°F | 10°C / 51°F | 152 mm | 12 |
| May | 23°C / 73°F | 15°C / 58°F | 193 mm | 15 |
| June | 27°C / 81°F | 19°C / 67°F | 189 mm | 14 |
| July | 32°C / 89°F | 24°C / 75°F | 168 mm | 14 |
| August | 33°C / 91°F | 25°C / 77°F | 144 mm | 14 |
| September | 29°C / 84°F | 22°C / 71°F | 202 mm | 14 |
| October | 22°C / 72°F | 14°C / 58°F | 143 mm | 12 |
| November | 17°C / 63°F | 9°C / 47°F | 79 mm | 7 |
| December | 12°C / 53°F | 3°C / 37°F | 56 mm | 6 |
Best time to visit Tokyo
October, April, June offer the most comfortable weather in Tokyo: mild daytime temperatures with the year's lowest rainfall — October averages 22°C (72°F); April averages 20°C (67°F); June averages 27°C (81°F).
Tokyo climate FAQ
- What is the hottest month in Tokyo?
- August is the hottest month in Tokyo, with average daytime highs of 33°C / 91°F and overnight lows of 25°C / 77°F (averages for 2021–2025).
- What is the coldest month in Tokyo?
- January is the coldest month in Tokyo, with average highs of 9°C / 49°F and lows of 0°C / 32°F.
- How much rain does Tokyo get a year?
- Tokyo receives about 1570 mm of rainfall a year, spread over roughly 131 wet days. September is the wettest month (202 mm on average) and January the driest (35 mm).
- When is the best time to visit Tokyo?
- October, April, June are the most comfortable months in Tokyo: mild daytime temperatures with the least rainfall of the year.
Want today's conditions instead of averages?
See live weather in Tokyo →Source: Open-Meteo Historical Weather API (ERA5 reanalysis), Open-Meteo. Averages are daily means across 2021–2025 and are rounded for display — for a live forecast see the Tokyo weather page.