Ireland · 1991–2020

Best time to visit
Belmullet.

July leads for comfortable weather in Belmullet: typically 17.7°C by day, 12°C at night, with 101 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high17.7°C

Typical low12°C

Rain in July101 mm

Comfort

July

July · August · June

51climate match

Beach

July

July · August · June

14climate match

Outdoors

June

June · July · August

62climate match

The weakest month is January, scoring 5 against July’s 51 — days reach only 8.8°C, 15° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

58.8° / 4°

Feb

59.4° / 4.3°

Mar

1410.7° / 4.6°

Apr

2712.5° / 5.8°

May

3614.7° / 8°

Jun

4616.3° / 10.3°

Jul

5117.7° / 12°

Aug

5017.9° / 12.1°

Sep

4316.8° / 10.6°

Oct

2414.1° / 8.4°

Nov

911.1° / 6.2°

Dec

59.1° / 4.4°

Monthly climate evidence for Belmullet — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 14 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	8.8°C	4°C	141 mm	22.6	9.5°C	7 h 52	5	Good coverage
February	9.4°C	4.3°C	120 mm	19.9	9.1°C	9 h 38	5	Good coverage
March	10.7°C	4.6°C	98 mm	19.4	9.0°C	11 h 39	14	Good coverage
April	12.5°C	5.8°C	82 mm	16.7	9.7°C	13 h 57	27	Good coverage
May	14.7°C	8°C	89 mm	17.5	11.1°C	15 h 58	36	Strong coverage
June	16.3°C	10.3°C	90 mm	16.9	13.0°C	17 h 09	46	Strong coverage
July	17.7°C	12°C	101 mm	18.7	14.5°C	16 h 41	51	Strong coverage
August	17.9°C	12.1°C	110 mm	19.1	15.2°C	14 h 53	50	Strong coverage
September	16.8°C	10.6°C	117 mm	18.8	14.6°C	12 h 37	43	Strong coverage
October	14.1°C	8.4°C	145 mm	20.9	13.3°C	10 h 24	24	Strong coverage
November	11.1°C	6.2°C	146 mm	22.2	11.8°C	8 h 24	9	Good coverage
December	9.1°C	4.4°C	154 mm	22.5	10.5°C	7 h 21	5	Good coverage

Records at BELMULLET, 1973–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.0°C29 Jan 1974	-6.4°C18 Jan 1985	46 mm15 Jan 2005	230 mm2018 · driest 40 mm in 1997	49
February	15.1°C13 Feb 2008	-5.4°C21 Feb 1986	29 mm4 Feb 1990	237 mm1990 · driest 4 mm in 1986	48
March	22.2°C27 Mar 2012	-4.4°C3 Mar 2006	27 mm25 Mar 1981	164 mm1986 · driest 36 mm in 2005	48
April	24.4°C17 Apr 2003	-2.1°C4 Apr 2013	24 mm25 Apr 2007	131 mm1991 · driest 12 mm in 1980	48
May	26.6°C31 May 1997	0.0°C4 May 1979	36 mm26 May 1985	150 mm2011 · driest 16 mm in 1991	49
June	27.0°C26 Jun 1995	1.4°C11 Jun 1986	40 mm22 Jun 2008	151 mm2002 · driest 27 mm in 1995	49
July	28.0°C26 Jul 1995	5.0°C3 Jul 1981	45 mm10 Jul 1987	151 mm2023 · driest 24 mm in 1982	50
August	26.7°C18 Aug 1995	3.1°C31 Aug 1986	45 mm25 Aug 2020	245 mm1992 · driest 11 mm in 1995	50
September	25.4°C21 Sep 1998	1.8°C18 Sep 1986	102 mm6 Sep 1993	206 mm1985 · driest 21 mm in 1986	49
October	21.0°C2 Oct 2013	-1.7°C17 Oct 1993	101 mm29 Oct 1993	256 mm2000 · driest 47 mm in 2016	50
November	20.0°C11 Nov 1976	-3.9°C30 Nov 2010	43 mm2 Nov 1980	227 mm1984 · driest 47 mm in 1983	51
December	17.0°C16 Dec 1973	-6.8°C22 Dec 2010	49 mm25 Dec 2022	234 mm2015 · driest 60 mm in 1995	50

Typical days per month at BELMULLET, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	2	4
February	0	2	3
March	0	<1	2
April	0	<1	2
May	<1	0	2
June	<1	0	2
July	<1	0	2
August	<1	0	3
September	<1	0	3
October	0	0	4
November	0	<1	4
December	0	1	4

How often, not how much — every day in BELMULLET’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	0%	72%	12%	91%	7.6–9.8°C
February	0%	67%	9%	85%	7.6–10.0°C
March	<1%	63%	8%	81%	9.1–11.7°C
April	1%	52%	5%	71%	10.8–14.3°C
May	4%	51%	6%	70%	13.0–16.4°C
June	4%	53%	7%	70%	14.7–17.6°C
July	6%	54%	8%	74%	16.0–18.9°C
August	7%	59%	10%	83%	16.2–19.3°C
September	5%	61%	10%	84%	15.3–18.1°C
October	<1%	67%	14%	88%	12.5–14.9°C
November	0%	72%	13%	88%	9.7–12.0°C
December	0%	72%	13%	91%	7.6–10.2°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1978Each stripe is one year’s mean temperature against the 21-year average. Warmest: 2025. Coolest: 1986.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2966208
NOAA station: EIM00003976 · BELMULLET
Station distance: 1.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 54.23°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 14 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.

These places read the same station, so their numbers are identical — distance from BELMULLET is what differs

Knocknalower→Dooagh→Bangor→Mulranny→Achill Sound→Ballycastle→

Or put two places side by side: Belmullet vs Knocknalower

Best time to visitBelmullet.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Belmullet.

The whole year,
without the guesswork.

Nearby, measured,
and named.