Tokyo, Japan — Weather in September 2026

Climate Overview

Tokyo, Japan in September has warm conditions, with highs averaging 26.9°C (80°F). Rain falls on about 14 days this month. Sea temperature reaches 27.1°C (81°F).

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 29°C (83°F) at the start to 25°C (77°F) by month's end.

Rainfall is heaviest during the first third of the month, while the last third tends to be drier.

Wind speeds ease off through the month, from 20 km/h (13 mph) to 17 km/h (10 mph).

The warmest days tend to fall around the 1th, averaging 28.8°C (84°F).

Compared to August, this month is about 4°C cooler with 3 more rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

27°C / 21°C

Feels Like

30°C / 24°C

Rain

14 days · 165 mm

Sunshine

7.6h / day

Humidity

82% — Very Humid

Wind

19 km/h

Wind Direction

ENE (72°)

Gusts

32 km/h

Daylight

12.4 h

Cloud Cover

69%

Clear Sky Days

UV Index

5.8 — High

Sea Temperature

27°C

Dew Point

21°C — Muggy

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 05:25

Daylight 12.4h

Sunset 17:52

What to Expect

Daytime temperatures around 27°C (80°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.

3 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

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

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketWaterproof shoesBreathable clothingSunscreen (SPF 30+)Sun hatSunglasses

Frequently Asked Questions

Expand all

Is September a good time to visit Tokyo?

September is typically excellent for visiting Tokyo, with average highs of 27°C (80°F) and around 14 rainy days. Tokyo, Japan in September has warm conditions, with highs averaging 26.9°C (80°F). Rain falls on about 14 days this mont

Does it rain a lot in Tokyo in September?

Tokyo typically sees around 14 rainy days in September with 165 mm (6.5 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Tokyo in September?

Nights stay pleasantly warm in Tokyo during September, around 21°C (70°F). Light evening wear is sufficient.

What should I pack for Tokyo in September?

With highs of 27°C (80°F) and lows of 21°C (70°F) in September, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). Comfortable walking shoes are essential.

Is September among the best months weather-wise in Tokyo?

Yes, September offers some of the best weather conditions in Tokyo with comfortable temperatures and lower chances of rain.

What is the UV index in Tokyo in September?

The average UV index in Tokyo during September is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Tokyo in September?

Tokyo gets approximately 12 hours of daylight per day in September, with around 8 hours of sunshine.

Does it snow in Tokyo in September?

Snow is uncommon in Tokyo during September based on 10-year climate averages.

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