Fukuoka, Japan — Weather in September 2026

Climate Overview

Fukuoka, Japan in September has warm conditions, with highs averaging 27.9°C (82°F). Rain falls on about 15 days this month, totalling around 194 mm. Sea temperature reaches 29°C (84°F).

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 30°C (85°F) at the start to 26°C (80°F) by month's end.

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

Expect around 7.7h of sunshine at the start of September, increasing to 8.5h by the end.

The warmest days tend to fall around the 4th, averaging 29.6°C (85°F).

Compared to August, this month is about 4°C cooler with 0 fewer rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

28°C / 22°C

Feels Like

32°C / 26°C

Rain

15 days · 194 mm

Sunshine

7.9h / day

Humidity

83% — Very Humid

Wind

13 km/h

Wind Direction

NE (53°)

Gusts

34 km/h

Daylight

12.4 h

Cloud Cover

66%

Clear Sky Days

2.1

UV Index

6.4 — High

Sea Temperature

29°C

Dew Point

22°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 06:03

Daylight 12.4h

Sunset 18:28

What to Expect

Daytime temperatures around 28°C (82°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.

2 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 / 4°C	6°C / 1°C	9days (67 mm) Wet	6.6h Fair	74% Muggy	3.3 Moderate	Poor	View Details
February	10°C / 4°C	7°C / 1°C	9days (81 mm) Wet	7.4h Good	73% Muggy	3.9 Moderate	Poor	View Details
March	15°C / 7°C	13°C / 5°C	11days (113 mm) Wet	7.9h Good	76% Humid	5.1 High	Fair	View Details
April	19°C / 11°C	19°C / 10°C	10days (132 mm) Wet	8.5h Good	77% Humid	5.9 High	Good	View Details
May best	23°C / 16°C	25°C / 16°C	12days (171 mm) Wet	8.8h Good	79% Humid	6.4 High	Excellent	View Details
June	26°C / 20°C	30°C / 23°C	15days (270 mm) Wet	7.7h Good	84% Humid	6.5 High	Wet	View Details
July	30°C / 25°C	36°C / 29°C	18days (293 mm) Wet	9h Good	85% Humid	7.5 Very High	Wet	View Details
August	32°C / 25°C	37°C / 31°C	15days (232 mm) Wet	10h Excellent	81% Humid	7.4 Very High	Wet	View Details
September	28°C / 22°C	32°C / 26°C	15days (194 mm) Wet	7.9h Good	83% Humid	6.4 High	Wet	View Details
October best	23°C / 16°C	23°C / 17°C	9days (91 mm) Wet	7.9h Good	79% Humid	4.9 Moderate	Excellent	View Details
November	17°C / 11°C	16°C / 9°C	7days (70 mm) Good	7.6h Good	76% Humid	3.7 Moderate	Good	View Details
December	11°C / 5°C	8°C / 3°C	8days (58 mm) Wet	6.3h Fair	73% Muggy	3.1 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 Fukuoka?

September is typically wet for visiting Fukuoka, with average highs of 28°C (82°F) and around 15 rainy days. Fukuoka, Japan in September has warm conditions, with highs averaging 27.9°C (82°F). Rain falls on about 15 days this mo

Does it rain a lot in Fukuoka in September?

Fukuoka typically sees around 15 rainy days in September with 194 mm (7.6 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Fukuoka in September?

Nights stay pleasantly warm in Fukuoka during September, around 22°C (72°F). Light evening wear is sufficient.

What should I pack for Fukuoka in September?

With highs of 28°C (82°F) and lows of 22°C (72°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 Fukuoka?

September is not the most favourable month weather-wise in Fukuoka. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Fukuoka in September?

The average UV index in Fukuoka 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 Fukuoka in September?

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

Does it snow in Fukuoka in September?

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

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