Japan · 1991–2020

Best time to visit
Itoshima

For Itoshima, October has the most comfortable weather in our climate comparison. Typical daytime highs are 23.6°C, nights average 15.6°C, and rainfall totals about 125 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.

Best all-round monthOctober

Typical daytime high23.6°C

Typical night-time low15.6°C

October rainfall125 mm

Overall comfort

October

Other strong months: May and April

81/100 weather score

Beach weather

September

Other strong months: October and May

61/100 weather score

Outdoor sightseeing

November

Other strong months: April and October

78/100 weather score

Make the answer personal

Choose the weather
that suits you.

Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.

Daytime high: at least 18°CDaytime high: at most 28°CMonthly rain: no more than 130 mmWet days: no more than 10

3 months fit your choices for Itoshima

April19.8°C day · 126 mm rain · 9.8 wet days

October23.6°C day · 125 mm rain · 7.5 wet days

November18.1°C day · 91 mm rain · 8.2 wet days

July has the lowest comfort score at 5 out of 100, compared with October at 81. The main reason is that 360 mm of rain falls.

Quick answers

Planning a trip to Itoshima?

These answers come from the same measured monthly climate record shown on this page.

When is the best time to visit Itoshima?

October is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 23.6°C and 125 mm of rain.

What is the hottest month in Itoshima?

August is hottest in this record, with a typical daytime high of 32.5°C and a night-time low of 25.2°C.

Which month has the least rain?

February has the lowest monthly rainfall total at 70 mm.

Is this a weather forecast?

No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.

Month by month

See how the weather
changes through the year.

The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.

1810.2° / 3.5°

2911.6° / 3.9°

3515° / 6.5°

6019.8° / 11.2°

7624.3° / 15.7°

3727.1° / 19.9°

531.2° / 24.4°

1732.5° / 25.2°

4428.5° / 21.3°

8123.6° / 15.6°

5918.1° / 10.1°

3112.8° / 5.2°

Monthly climate evidence for Itoshima — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 11 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	10.2°C	3.5°C	98 mm	11.2	15.5°C	10 h 09	18	Good coverage
February	11.6°C	3.9°C	70 mm	9	14.0°C	10 h 56	29	Good coverage
March	15°C	6.5°C	126 mm	11.5	14.1°C	11 h 53	35	Good coverage
April	19.8°C	11.2°C	126 mm	9.8	15.4°C	12 h 58	60	Good coverage
May	24.3°C	15.7°C	149 mm	9.7	17.9°C	13 h 53	76	Good coverage
June	27.1°C	19.9°C	289 mm	12.6	20.7°C	14 h 22	37	Good coverage
July	31.2°C	24.4°C	360 mm	13.7	24.4°C	14 h 10	5	Good coverage
August	32.5°C	25.2°C	241 mm	11.7	26.7°C	13 h 24	17	Good coverage
September	28.5°C	21.3°C	192 mm	11	25.3°C	12 h 20	44	Good coverage
October	23.6°C	15.6°C	125 mm	7.5	22.7°C	11 h 17	81	Good coverage
November	18.1°C	10.1°C	91 mm	8.2	20.4°C	10 h 23	59	Good coverage
December	12.8°C	5.2°C	88 mm	11	17.9°C	9 h 56	31	Good coverage

Records at FUKUOKA, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.4°C29 Jan 1957	-4.6°C5 Jan 1970	48 mm26 Jan 2002	193 mm1972 · driest 0 mm in 2026	75
February	23.8°C21 Feb 2004	-5.2°C16 Feb 1977	61 mm15 Feb 1968	175 mm1951 · driest 0 mm in 2026	75
March	26.9°C25 Mar 2025	-3.7°C2 Mar 1994	102 mm25 Mar 1958	218 mm1958 · driest 0 mm in 2026	75
April	29.9°C22 Apr 2004	0.1°C6 Apr 1965	216 mm15 Apr 1955	361 mm1955 · driest 0 mm in 2025	75
May	32.3°C22 May 1998	4.8°C1 May 1965	138 mm14 May 1995	496 mm1963 · driest 0 mm in 2025	75
June	37.3°C20 Jun 2004	10.8°C3 Jun 1959	308 mm25 Jun 1953	1056 mm1953 · driest 0 mm in 2025	75
July	38.3°C20 Jul 2018	13.8°C4 Jul 1966	253 mm25 Jul 2009	886 mm1980 · driest 0 mm in 2025	75
August	38.1°C21 Aug 2018	15.4°C26 Aug 1956	230 mm14 Aug 2021	881 mm2021 · driest 0 mm in 2025	74
September	36.5°C1 Sep 1990	9.8°C29 Sep 1965	217 mm25 Sep 1954	603 mm2016 · driest 0 mm in 2025	74
October	31.9°C11 Oct 1999	4.8°C23 Oct 1955	172 mm14 Oct 1951	290 mm2017 · driest 0 mm in 2025	74
November	27.5°C8 Nov 2015	-0.6°C21 Nov 1953	186 mm2 Nov 2024	355 mm2024 · driest 0 mm in 2025	74
December	26.0°C4 Dec 2018	-3.1°C13 Dec 1964	87 mm5 Dec 2004	143 mm2016 · driest 0 mm in 2025	74

Typical days per month at FUKUOKA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	1	2
February	0	0	<1	2
March	0	0	0	4
April	2	0	0	4
May	13	<1	0	4
June	22	4	0	5
July	28	20	0	6
August	29	24	0	5
September	26	9	0	4
October	9	<1	0	3
November	<1	0	0	3
December	0	0	<1	2

How often different weather occurs at FUKUOKA, based on its daily record
Month	Dry days reaching 20°C	Wet days	Days with heavy rain	Weeks with 3+ wet days	Typical high by year
January	0%	33%	8%	39%	8.3–11.4°C
February	1%	35%	9%	44%	8.5–13.2°C
March	5%	36%	13%	43%	12.8–15.8°C
April	29%	36%	16%	42%	18.2–21.0°C
May	60%	34%	16%	37%	22.6–25.2°C
June	58%	42%	22%	55%	25.2–27.9°C
July	62%	39%	21%	44%	28.7–32.8°C
August	67%	34%	18%	42%	30.3–33.8°C
September	62%	38%	18%	44%	26.4–29.7°C
October	66%	26%	10%	25%	21.9–24.6°C
November	20%	30%	10%	32%	16.4–19.5°C
December	<1%	32%	7%	35%	10.7–14.0°C

A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.

1951Each stripe is one year’s mean temperature against the 41-year average. Warmest: 2025. Coolest: 1965.2025

The evidence behind this page

Where these figures
come from.

Place identity: GeoNames 11612341
NOAA station: JA000047807 · FUKUOKA
Station distance: 19 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 33.54°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 11 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

Next step

Choose your month.
Then plan the details.

The weather comparison for Itoshima is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.

How travel partnerships will work

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