Fukuoka, Japan — Weather in August 2026

Climate Overview

Fukuoka, Japan in August has hot conditions, with highs reaching 31.6°C (89°F) and afternoons the warmest part of the day. Rain falls on about 15 days this month, totalling around 232 mm. Sea temperature reaches 30°C (86°F).

This month falls at the end of Summer. The combination of heat and frequent rain creates tropical monsoon conditions.

Daily highs in August gradually drop from around 33°C (91°F) at the start to 30°C (86°F) by month's end.

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

Expect around 11.8h of sunshine at the start of August, decreasing to 9.3h by the end.

The warmest days tend to fall around the 4th, averaging 32.9°C (91°F).

Compared to July, this month is about 2°C warmer with 3 fewer rainy days. Temperatures begin dropping heading into September.

Monthly August Averages

Temperature

32°C / 25°C

Feels Like

37°C / 31°C

Rain

15 days · 232 mm

Sunshine

10h / day

Humidity

81% — Very Muggy

Wind

13 km/h

Wind Direction

SSW (192°)

Gusts

36 km/h

Daylight

13.4 h

Cloud Cover

59%

Clear Sky Days

3.5

UV Index

7.4 — Very High

Sea Temperature

30°C

Dew Point

25°C — Oppressive

Moon Phase

Waxing Crescent · 3%

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 05:41

Daylight 13.4h

Sunset 19:07

What to Expect

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.

1 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

Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool.

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 August a good time to visit Fukuoka?

August is typically wet for visiting Fukuoka, with average highs of 32°C (89°F) and around 15 rainy days. Fukuoka, Japan in August has hot conditions, with highs reaching 31.6°C (89°F) and afternoons the warmest part of the da

Does it rain a lot in Fukuoka in August?

Fukuoka typically sees around 15 rainy days in August with 232 mm (9.1 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Fukuoka in August?

Nights stay pleasantly warm in Fukuoka during August, around 25°C (78°F). Light evening wear is sufficient.

What should I pack for Fukuoka in August?

With highs of 32°C (89°F) and lows of 25°C (78°F) in August, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). Comfortable walking shoes are essential.

Is August among the best months weather-wise in Fukuoka?

August 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 August?

The average UV index in Fukuoka during August is 7 (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 August?

Fukuoka gets approximately 13 hours of daylight per day in August, with around 10 hours of sunshine.

Does it snow in Fukuoka in August?

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

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