Tokyo weather by month & the best time to visit
Japan · major coastal city · humid subtropical climate
The best time to visit Tokyo is August — its sunniest month (Sunshine Score 66/100), with May and June close behind. Tokyo averages about 1,958 hours of sunshine a year. Daytime highs around 31°C / 88°F and roughly 134 mm of rain in August.
When is the best time to visit Tokyo?
For sunshine, the best time to visit Tokyo is August, then May and June. The dullest month is January (6/100, 80 mm of rain). The full month-by-month picture is in the table below.
How sunny is Tokyo?
Tokyo gets a moderate 1,958 hours of sunshine a year. 60 Sunshine Score points separate August (66) from January (6), so the month you pick matters. It ranks #9 of 79 destinations in Japan for annual sunshine, above the national median of 1,773 hours. The year's 1,694 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 6 | 9° / 48°F | 1° / 34°F | 80 mm | 2 | 10° / 50°F |
| February | 13 | 10° / 50°F | 1° / 34°F | 75 mm | 3 | 11° / 52°F |
| March | 34 | 14° / 57°F | 4° / 39°F | 124 mm | 4 | 12° / 54°F |
| April | 54 | 18° / 64°F | 9° / 48°F | 135 mm | 5 | 15° / 59°F |
| May | 63 | 23° / 73°F | 14° / 57°F | 148 mm | 6 | 19° / 66°F |
| June | 63 | 26° / 79°F | 18° / 64°F | 185 mm | 6 | 23° / 73°F |
| July | 63 | 29° / 84°F | 22° / 72°F | 153 mm | 6 | 27° / 81°F |
| August | 66 | 31° / 88°F | 23° / 73°F | 134 mm | 7 | 28° / 82°F |
| September | 63 | 27° / 81°F | 20° / 68°F | 211 mm | 6 | 27° / 81°F |
| October | 63 | 22° / 72°F | 15° / 59°F | 246 mm | 4 | 23° / 73°F |
| November | 51 | 17° / 63°F | 9° / 48°F | 120 mm | 3 | 19° / 66°F |
| December | 25 | 12° / 54°F | 3° / 37°F | 83 mm | 2 | 15° / 59°F |
Sea temperature in Tokyo by month
The sea off Tokyo is warmest in August at around 28°C / 82°F, and coolest in January at 10°C / 50°F. The water sits at a comfortable 21°C or warmer roughly 5 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
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Tokyo: questions and answers
What kind of destination is Tokyo?
Tokyo is a major coastal city in Japan with a humid subtropical climate — the sea reaches 28°C at its warmest and is swimmable (21°C+) about 5 months a year.
How many hours of sunshine does Tokyo get a year?
Tokyo gets about 1,958 hours of sunshine a year, at its best around August.
When is the best time to visit Tokyo?
The sunniest time to visit Tokyo is August, when the Sunshine Score peaks at 66/100 (with May and June close behind). Expect daytime highs around 31°C / 88°F.
What is the least sunny month in Tokyo?
January is the least sunny month in Tokyo, scoring 6/100 with about 80 mm of rain.
What is the sea temperature in Tokyo?
The sea in Tokyo ranges from about 10°C (January) to 28°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Tokyo?
The typical midday UV index in Tokyo peaks around 7 (high) in August, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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