Croatia · 1991–2020

Best time to visit
Rovinj.

May leads for comfortable weather in Rovinj: typically 22.7°C by day, 11.8°C at night, with 75 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high22.7°C

Typical low11.8°C

Rain in May75 mm

Comfort

May

May · June · September

80climate match

Beach

July

July · August · June

82climate match

Outdoors

April

April · October · May

80climate match

The weakest month is January, scoring 21 against May’s 80 — days reach only 9.2°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

219.2° / 1.3°

Feb

2410.3° / 1.2°

Mar

4214.1° / 4.1°

Apr

5918.2° / 7.6°

May

8022.7° / 11.8°

Jun

8027° / 15.5°

Jul

7329.4° / 17.3°

Aug

7029.5° / 17.3°

Sep

7924.6° / 13.7°

Oct

6219.6° / 10.2°

Nov

3614.5° / 6.5°

Dec

2110.4° / 2.5°

Monthly climate evidence for Rovinj — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 5 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	9.2°C	1.3°C	52 mm	6.5	11.4°C	9 h 07	21	Strong coverage
February	10.3°C	1.2°C	61 mm	6.2	10.1°C	10 h 20	24	Strong coverage
March	14.1°C	4.1°C	56 mm	5.8	10.5°C	11 h 46	42	Strong coverage
April	18.2°C	7.6°C	64 mm	7.4	13.1°C	13 h 25	59	Strong coverage
May	22.7°C	11.8°C	75 mm	7.6	17.7°C	14 h 50	80	Strong coverage
June	27°C	15.5°C	78 mm	6.4	22.2°C	15 h 36	80	Strong coverage
July	29.4°C	17.3°C	59 mm	5.1	24.8°C	15 h 18	73	Strong coverage
August	29.5°C	17.3°C	72 mm	5.6	25.6°C	14 h 05	70	Strong coverage
September	24.6°C	13.7°C	123 mm	7.8	22.9°C	12 h 28	79	Strong coverage
October	19.6°C	10.2°C	110 mm	8.3	19.6°C	10 h 52	62	Strong coverage
November	14.5°C	6.5°C	123 mm	9	16.6°C	9 h 28	36	Strong coverage
December	10.4°C	2.5°C	87 mm	7.7	13.7°C	8 h 46	21	Strong coverage

Records at PORTOROZ-LETALISCE, 1987–2023
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.2°C19 Jan 2014	-9.5°C26 Jan 2000	58 mm8 Jan 2001	168 mm2001 · driest 0 mm in 1989	36
February	22.2°C22 Feb 1990	-10.3°C7 Feb 1991	52 mm12 Feb 2007	197 mm2016 · driest 1 mm in 1998	36
March	23.2°C30 Mar 2017	-10.5°C2 Mar 2005	45 mm24 Mar 1992	183 mm2013 · driest 0 mm in 2012	36
April	28.2°C19 Apr 2018	-4.2°C8 Apr 2003	58 mm21 Apr 2014	136 mm1998 · driest 1 mm in 2007	36
May	33.2°C29 May 2008	3.3°C5 May 2011	60 mm30 May 2010	190 mm1991 · driest 3 mm in 1992	36
June	35.6°C26 Jun 2019	6.4°C1 Jun 2006	76 mm20 Jun 2009	200 mm2020 · driest 5 mm in 2006	37
July	37.4°C22 Jul 2015	8.8°C5 Jul 2007	131 mm29 Jul 2010	264 mm2014 · driest 2 mm in 1988	37
August	37.3°C8 Aug 2013	7.5°C8 Aug 2005	131 mm28 Aug 2023	325 mm2006 · driest 2 mm in 2011	37
September	33.0°C12 Sep 2020	4.8°C29 Sep 2008	137 mm21 Sep 1996	303 mm2001 · driest 17 mm in 2006	36
October	27.5°C14 Oct 2000	-1.8°C25 Oct 2003	98 mm10 Oct 2000	274 mm1992 · driest 19 mm in 1997	35
November	24.4°C1 Nov 2004	-5.0°C22 Nov 1995	109 mm20 Nov 2016	281 mm2000 · driest 7 mm in 1988	35
December	19.1°C1 Dec 2014	-9.9°C20 Dec 2009	88 mm6 Dec 2020	238 mm2020 · driest 0 mm in 2015	35

Typical days per month at PORTOROZ-LETALISCE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	13	2
February	0	0	11	2
March	0	0	5	2
April	<1	0	<1	2
May	8	<1	0	3
June	22	6	0	3
July	29	13	0	2
August	29	14	0	2
September	14	1	0	4
October	<1	0	<1	3
November	0	0	3	4
December	0	0	9	3

How often, not how much — every day in PORTOROZ-LETALISCE’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%	20%	6%	21%	7.5–11.2°C
February	<1%	22%	7%	25%	8.3–12.9°C
March	3%	18%	6%	20%	11.9–16.4°C
April	24%	26%	7%	31%	16.5–20.0°C
May	65%	25%	9%	27%	20.7–24.7°C
June	78%	22%	9%	23%	24.9–28.9°C
July	83%	17%	7%	13%	27.6–31.5°C
August	82%	18%	8%	17%	27.1–31.2°C
September	71%	26%	13%	33%	22.9–26.6°C
October	35%	26%	11%	29%	18.1–21.3°C
November	2%	29%	13%	35%	12.8–16.2°C
December	0%	25%	9%	30%	8.6–11.9°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.

1989Each stripe is one year’s mean temperature against the 34-year average. Warmest: 2018. Coolest: 1991.2022

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3191518
NOAA station: SIE00115166 · PORTOROZ-LETALISCE
Station distance: 46.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 45.08°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 5 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 PORTOROZ-LETALISCE is what differs

Izola→Poreč→Caorle→Grado→Umag→Lucija→

Or put two places side by side: Rovinj vs Izola

Best time to visitRovinj.

May

July

April

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Rovinj.

The whole year,
without the guesswork.

Nearby, measured,
and named.