Switzerland · 1991–2020

Best time to visit
Mendrisio.

June leads for comfortable weather in Mendrisio: typically 24.9°C by day, 16.1°C at night, with 172 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high24.9°C

Typical low16.1°C

Rain in June172 mm

Comfort

June

June · September · August

69climate match

Beach

July

July · August · June

59climate match

Outdoors

October

October · March · April

63climate match

The weakest month is January, scoring 13 against June’s 69 — days reach only 7.2°C, 17° 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

137.2° / 1.3°

Feb

229° / 2°

Mar

3913.5° / 5.3°

Apr

4416.7° / 8.5°

May

5720.8° / 12.5°

Jun

6924.9° / 16.1°

Jul

6227.3° / 18.1°

Aug

6326.8° / 17.9°

Sep

6822° / 14.2°

Oct

4716.9° / 10.3°

Nov

1811.6° / 5.8°

Dec

147.7° / 2°

Monthly climate evidence for Mendrisio — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7.2°C	1.3°C	68 mm	5.5	9 h 02	13	Strong coverage
February	9°C	2°C	61 mm	5	10 h 17	22	Strong coverage
March	13.5°C	5.3°C	76 mm	6.3	11 h 45	39	Strong coverage
April	16.7°C	8.5°C	138 mm	9.9	13 h 28	44	Strong coverage
May	20.8°C	12.5°C	178 mm	11.6	14 h 54	57	Strong coverage
June	24.9°C	16.1°C	172 mm	10.1	15 h 42	69	Strong coverage
July	27.3°C	18.1°C	158 mm	8.2	15 h 23	62	Strong coverage
August	26.8°C	17.9°C	158 mm	9.6	14 h 08	63	Strong coverage
September	22°C	14.2°C	167 mm	8.7	12 h 29	68	Strong coverage
October	16.9°C	10.3°C	150 mm	9.2	10 h 50	47	Strong coverage
November	11.6°C	5.8°C	167 mm	9.3	9 h 24	18	Strong coverage
December	7.7°C	2°C	80 mm	6.3	8 h 41	14	Strong coverage

What has changed

Mendrisio runs +1.6°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

+2.2

Feb

+1.7

Mar

+1.7

Apr

+1.7

May

+1.4

Jun

+2.2

Jul

+1.6

Aug

+2.1

Sep

+0.8

Oct

+0.9

Nov

+1.5

Dec

+1.8

June daytime highs, 2011–2025. Last recorded: 28.7°C.

Records at LUGANO, 1901–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	24.6°C29 Jan 1944	-12.5°C13 Jan 1926	87 mm28 Jan 1978	279 mm1978 · driest 0 mm in 1944	125
February	25.0°C23 Feb 1918	-14.0°C12 Feb 1929	80 mm22 Feb 1914	293 mm1951 · driest 0 mm in 1928	126
March	27.3°C19 Mar 2005	-7.0°C6 Mar 1971	107 mm22 Mar 1956	355 mm1916 · driest 0 mm in 1953	126
April	31.6°C9 Apr 2011	-2.7°C7 Apr 1911	102 mm4 Apr 1989	546 mm1989 · driest 0 mm in 1955	126
May	32.6°C27 May 1953	0.5°C1 May 1919	125 mm23 May 1908	519 mm1932 · driest 8 mm in 1919	126
June	36.2°C28 Jun 1935	4.2°C5 Jun 1936	134 mm11 Jun 1982	493 mm2017 · driest 17 mm in 2004	125
July	38.0°C23 Jul 1945	8.0°C10 Jul 1929	170 mm31 Jul 1979	397 mm2009 · driest 14 mm in 1984	125
August	36.4°C13 Aug 1933	6.5°C29 Aug 1924	263 mm21 Aug 1911	489 mm1977 · driest 12 mm in 1991	125
September	36.0°C5 Sep 1911	2.0°C30 Sep 1936	177 mm12 Sep 1994	447 mm1995 · driest 7 mm in 1929	124
October	28.9°C24 Oct 2018	-2.4°C27 Oct 1905	155 mm27 Oct 1928	550 mm1928 · driest 0 mm in 1969	125
November	25.4°C18 Nov 1964	-6.0°C28 Nov 1915	108 mm4 Nov 2014	587 mm2014 · driest 0 mm in 2015	125
December	21.4°C4 Dec 1956	-9.6°C19 Dec 1927	86 mm12 Dec 1957	352 mm1910 · driest 1 mm in 2015	125

Typical days per month at LUGANO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	8	2
February	0	0	6	2
March	<1	0	1	3
April	<1	<1	0	5
May	4	<1	0	6
June	16	2	0	5
July	25	5	0	4
August	23	4	0	5
September	5	0	0	5
October	<1	0	0	5
November	0	0	1	5
December	0	0	7	3

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 78); on 2011–2025 it is September (82). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in LUGANO’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	<1%	18%	7%	20%	4.7–8.6°C
February	<1%	21%	8%	25%	6.5–11.5°C
March	6%	25%	11%	31%	10.5–15.7°C
April	21%	35%	17%	49%	14.7–19.1°C
May	46%	41%	20%	56%	18.6–23.3°C
June	61%	37%	18%	48%	22.6–27.2°C
July	70%	30%	15%	35%	25.5–29.8°C
August	69%	31%	16%	38%	24.9–29.0°C
September	63%	29%	15%	37%	20.6–25.3°C
October	20%	29%	15%	37%	15.3–19.1°C
November	<1%	28%	14%	35%	9.6–12.7°C
December	<1%	21%	8%	24%	5.7–9.2°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.

1901Each stripe is one year’s mean temperature against the 123-year average. Warmest: 2022. Coolest: 1912.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2659689
NOAA station: SZ000009480 · LUGANO
Station distance: 14.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 45.87°, mid-month, sunrise to sunset including refraction. Not a station measurement.
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 LUGANO is what differs

Como→Varese→Lugano→Lecco→Bellinzona→Biella→

Or put two places side by side: Mendrisio vs Como

Best time to visitMendrisio.

June

July

October

The whole year,without the guesswork.

Mendrisio runs +1.6°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Mendrisio.

The whole year,
without the guesswork.

Mendrisio runs +1.6°C
on the 1961–1990 baseline.

Nearby, measured,
and named.