Ireland · 1991–2020

Best time to visit
Ballyshannon.

July leads for comfortable weather in Ballyshannon: typically 18.5°C by day, 12.1°C at night, with 103 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high18.5°C

Typical low12.1°C

Rain in July103 mm

Comfort

July

July · June · August

55climate match

Beach

July

July · June · August

18climate match

Outdoors

June

June · July · September

70climate match

The weakest month is January, scoring 5 against July’s 55 — days reach only 8.3°C, 16° 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

58.3° / 2.9°

Feb

58.5° / 2.7°

Mar

129.9° / 3.7°

Apr

2712.3° / 5.3°

May

4215.2° / 7.7°

Jun

5317.3° / 10.3°

Jul

5518.5° / 12.1°

Aug

5218.2° / 12.1°

Sep

4716.6° / 10.3°

Oct

2613.4° / 7.8°

Nov

810.5° / 5.3°

Dec

58.7° / 3.4°

Monthly climate evidence for Ballyshannon — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 32 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	8.3°C	2.9°C	132 mm	19.9	8.7°C	7 h 49	5	Strong coverage
February	8.5°C	2.7°C	103 mm	16.5	8.1°C	9 h 37	5	Strong coverage
March	9.9°C	3.7°C	97 mm	17.4	8.2°C	11 h 39	12	Strong coverage
April	12.3°C	5.3°C	79 mm	15.1	9.2°C	13 h 58	27	Strong coverage
May	15.2°C	7.7°C	82 mm	13.5	11.1°C	16 h 01	42	Strong coverage
June	17.3°C	10.3°C	83 mm	14.1	13.3°C	17 h 13	53	Strong coverage
July	18.5°C	12.1°C	103 mm	16.8	14.8°C	16 h 44	55	Strong coverage
August	18.2°C	12.1°C	113 mm	17.5	15.5°C	14 h 55	52	Strong coverage
September	16.6°C	10.3°C	97 mm	15.9	14.8°C	12 h 38	47	Strong coverage
October	13.4°C	7.8°C	125 mm	17.8	13.3°C	10 h 23	26	Strong coverage
November	10.5°C	5.3°C	140 mm	20.3	11.6°C	8 h 22	8	Strong coverage
December	8.7°C	3.4°C	146 mm	20	10.0°C	7 h 18	5	Strong coverage

What has changed

Ballyshannon runs +1.1°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+1.1

Feb

+1.6

Mar

+1.1

Apr

+1.5

May

+1.6

Jun

+1.6

Jul

+0.7

Aug

+0.5

Sep

+1.1

Oct

+1.0

Nov

+1.0

Dec

+1.0

July daytime highs, 2013–2025. Last recorded: 19.5°C.

Records at BALLYSHANNON (CATHLEENS FALL), 1971–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	14.5°C9 Jan 2015	-8.9°C9 Jan 2010	32 mm11 Jan 2021	198 mm2015 · driest 13 mm in 1997	53
February	16.1°C23 Feb 2019	-9.3°C22 Feb 1986	39 mm8 Feb 2020	247 mm2020 · driest 3 mm in 1986	53
March	18.2°C22 Mar 2022	-7.1°C12 Mar 2013	36 mm31 Mar 1972	188 mm2019 · driest 35 mm in 1996	53
April	24.5°C30 Apr 2025	-3.0°C29 Apr 1973	31 mm10 Apr 1992	145 mm1993 · driest 13 mm in 2020	52
May	27.2°C26 May 2017	-4.0°C2 May 1973	69 mm21 May 1995	169 mm2002 · driest 12 mm in 2008	52
June	30.3°C27 Jun 2018	2.0°C4 Jun 1991	51 mm28 Jun 2020	190 mm2020 · driest 28 mm in 1975	52
July	30.4°C12 Jul 2025	4.8°C13 Jul 2002	41 mm4 Jul 2021	193 mm2023 · driest 22 mm in 1983	52
August	28.0°C8 Aug 2003	4.8°C24 Aug 1986	46 mm6 Aug 2021	202 mm1985 · driest 19 mm in 1995	52
September	27.4°C7 Sep 2023	1.1°C26 Sep 2020	42 mm1 Sep 1988	180 mm1981 · driest 16 mm in 1986	52
October	21.9°C9 Oct 2023	-3.3°C30 Oct 1992	55 mm27 Oct 1989	230 mm2000 · driest 19 mm in 1993	52
November	17.5°C6 Nov 2024	-3.4°C27 Nov 1978	46 mm4 Nov 1999	265 mm2009 · driest 38 mm in 1983	52
December	15.9°C9 Dec 2025	-8.3°C29 Dec 2000	44 mm4 Dec 2015	280 mm1999 · driest 42 mm in 1995	52

Typical days per month at BALLYSHANNON (CATHLEENS FALL), 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	5	4
February	0	5	2
March	0	3	3
April	0	1	2
May	<1	<1	2
June	<1	0	2
July	<1	0	3
August	<1	0	4
September	0	0	3
October	0	<1	4
November	0	1	4
December	0	4	5

How often, not how much — every day in BALLYSHANNON (CATHLEENS FALL)’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%	62%	11%	83%	6.3–9.4°C
February	0%	54%	8%	74%	6.3–9.7°C
March	0%	52%	7%	71%	8.2–11.2°C
April	1%	46%	5%	59%	10.4–13.7°C
May	7%	43%	5%	62%	13.0–16.7°C
June	14%	48%	7%	65%	15.4–18.7°C
July	17%	51%	9%	72%	16.4–19.6°C
August	13%	55%	11%	75%	16.6–19.8°C
September	7%	56%	10%	76%	15.3–17.7°C
October	<1%	58%	12%	81%	11.8–14.8°C
November	0%	63%	12%	86%	9.1–11.7°C
December	0%	63%	13%	84%	6.8–10.1°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.

1972Each stripe is one year’s mean temperature against the 49-year average. Warmest: 2023. Coolest: 1986.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2966406
NOAA station: EIE00107808 · BALLYSHANNON (CATHLEENS FALL)
Station distance: 0.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 54.50°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 32 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 BALLYSHANNON (CATHLEENS FALL) is what differs

Sligo→Gweedore→Dunlewy→Donegal→Bundoran→Strandhill→

Or put two places side by side: Ballyshannon vs Sligo

Best time to visitBallyshannon.

July

July

June

The whole year,without the guesswork.

Ballyshannon runs +1.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Ballyshannon.

The whole year,
without the guesswork.

Ballyshannon runs +1.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.