Monthly climate averages for Tokyo, Japan. Based on 10-year ERA5 reanalysis data.
Cfa Humid Subtropical
Climate OverviewTokyo, Japan in October has warm conditions, with highs averaging 20.9°C (70°F). Rain falls on about 14 days this month. Sea temperature averages 22.1°C (72°F).
This month falls at the middle of Autumn.
Daily highs in October gradually drop from around 25°C (76°F) at the start to 18°C (65°F) by month's end.
October sees fairly even rainfall, totalling about 190 mm across the month.
The warmest days tend to fall around the 1th, averaging 25°C (77°F).
Compared to September, this month is about 6°C cooler with 0 fewer rainy days. Temperatures begin dropping heading into November.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 21°C (70°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 9°C / 0°C | 5°C / -4°C | 6days (52 mm) Good | 7.8h Good | 70% Muggy | 3.2 Moderate | Poor | View Details |
| February | 10°C / 1°C | 6°C / -3°C | 7days (53 mm) Good | 8.4h Good | 68% Muggy | 3.9 Moderate | Poor | View Details |
| March | 14°C / 5°C | 11°C / 2°C | 12days (124 mm) Wet | 8h Good | 73% Muggy | 4.8 Moderate | Fair | View Details |
| April | 18°C / 10°C | 16°C / 8°C | 12days (119 mm) Wet | 8.7h Good | 75% Muggy | 5.6 High | Good | View Details |
| May best | 22°C / 15°C | 22°C / 15°C | 13days (128 mm) Wet | 8.7h Good | 77% Humid | 5.7 High | Excellent | View Details |
| June best | 25°C / 19°C | 27°C / 20°C | 14days (177 mm) Wet | 8.2h Good | 80% Humid | 6.5 High | Excellent | View Details |
| July | 29°C / 23°C | 33°C / 27°C | 13days (160 mm) Wet | 8.7h Good | 82% Humid | 7.5 Very High | Fair | View Details |
| August | 31°C / 25°C | 35°C / 29°C | 11days (117 mm) Wet | 9.8h Good | 80% Humid | 7.2 Very High | Fair | View Details |
| September best | 27°C / 21°C | 30°C / 24°C | 14days (165 mm) Wet | 7.6h Good | 82% Humid | 5.8 High | Excellent | View Details |
| October best | 21°C / 15°C | 21°C / 14°C | 14days (190 mm) Wet | 6.5h Fair | 79% Humid | 3.9 Moderate | Wet | View Details |
| November best | 16°C / 9°C | 14°C / 6°C | 10days (85 mm) Wet | 7.3h Good | 77% Humid | 3.2 Moderate | Good | View Details |
| December | 11°C / 3°C | 8°C / -1°C | 6days (48 mm) Good | 7.5h Good | 73% Muggy | 3 Moderate | Fair | View Details |
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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