Poland · 1991–2020

Best time to visit
Wejherowo.

July leads for comfortable weather in Wejherowo: typically 21.5°C by day, 13°C at night, with 73 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high21.5°C

Typical low13°C

Rain in July73 mm

Comfort

July

July · August · June

76climate match

Beach

July

July · August · June

41climate match

Outdoors

June

June · July · September

88climate match

The weakest month is January, scoring 5 against July’s 76 — days reach only 2.5°C, 21° 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

52.5° / -2.2°

Feb

53.1° / -2°

Mar

76.1° / -0.4°

Apr

3211.3° / 2.5°

May

5015.7° / 6.4°

Jun

6919° / 10.3°

Jul

7621.5° / 13°

Aug

7421.7° / 12.8°

Sep

5617.9° / 9.7°

Oct

3112.7° / 5.8°

Nov

97.3° / 2.3°

Dec

53.8° / -0.8°

Monthly climate evidence for Wejherowo — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 25 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	2.5°C	-2.2°C	46 mm	12.5	4.3°C	7 h 48	5	Strong coverage
February	3.1°C	-2°C	36 mm	10.5	3.1°C	9 h 36	5	Strong coverage
March	6.1°C	-0.4°C	39 mm	9.6	3.1°C	11 h 39	7	Strong coverage
April	11.3°C	2.5°C	28 mm	7.2	5.1°C	13 h 59	32	Strong coverage
May	15.7°C	6.4°C	48 mm	8.5	9.2°C	16 h 02	50	Strong coverage
June	19°C	10.3°C	46 mm	8.6	13.9°C	17 h 14	69	Strong coverage
July	21.5°C	13°C	73 mm	9.8	17.4°C	16 h 45	76	Strong coverage
August	21.7°C	12.8°C	85 mm	11.7	18.8°C	14 h 55	74	Strong coverage
September	17.9°C	9.7°C	83 mm	11.9	16.4°C	12 h 38	56	Strong coverage
October	12.7°C	5.8°C	80 mm	12.6	12.8°C	10 h 23	31	Strong coverage
November	7.3°C	2.3°C	63 mm	12.8	9.1°C	8 h 21	9	Strong coverage
December	3.8°C	-0.8°C	56 mm	13.8	6.2°C	7 h 17	5	Strong coverage

What has changed

Wejherowo runs +1.8°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

+2.0

Feb

+2.1

Mar

+1.8

Apr

+2.3

May

+1.5

Jun

+2.3

Jul

+1.4

Aug

+2.0

Sep

+2.2

Oct

+1.3

Nov

+1.4

Dec

+1.8

July daytime highs, 2011–2025. Last recorded: 21.2°C.

Records at LEBA, 1966–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	13.0°C1 Jan 2023	-23.2°C7 Jan 2003	20 mm3 Jan 1982	122 mm2007 · driest 3 mm in 2026	61
February	16.8°C21 Feb 1990	-25.0°C6 Feb 2012	27 mm5 Feb 2011	86 mm1973 · driest 1 mm in 2026	61
March	22.6°C30 Mar 1968	-19.0°C6 Mar 1971	31 mm6 Mar 2019	105 mm2008 · driest 0 mm in 2026	61
April	29.0°C29 Apr 2000	-7.5°C16 Apr 1979	26 mm11 Apr 1983	114 mm1970 · driest 0 mm in 1974	61
May	32.4°C18 May 1971	-4.8°C4 May 1978	53 mm29 May 2002	109 mm1996 · driest 2 mm in 2025	61
June	33.4°C12 Jun 2019	-1.6°C1 Jun 1977	40 mm23 Jun 2001	120 mm1971 · driest 2 mm in 1992	61
July	34.4°C21 Jul 2022	4.2°C6 Jul 1975	141 mm24 Jul 1988	225 mm1988 · driest 3 mm in 1994	61
August	37.2°C10 Aug 1992	1.8°C26 Aug 1973	82 mm13 Aug 1999	203 mm1999 · driest 0 mm in 2025	60
September	32.1°C18 Sep 1975	-2.5°C29 Sep 1966	42 mm23 Sep 2018	200 mm1990 · driest 1 mm in 2025	60
October	27.6°C4 Oct 1966	-5.0°C26 Oct 1988	45 mm4 Oct 1975	220 mm1974 · driest 6 mm in 2025	60
November	20.3°C1 Nov 1968	-11.5°C22 Nov 1998	33 mm15 Nov 1972	157 mm1969 · driest 5 mm in 2025	60
December	12.9°C6 Dec 2006	-19.7°C31 Dec 1969	23 mm4 Dec 2007	114 mm1967 · driest 0 mm in 2025	60

Typical days per month at LEBA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	15	<1
February	0	0	14	<1
March	0	0	13	<1
April	<1	0	6	<1
May	2	<1	<1	1
June	3	<1	0	1
July	5	<1	0	2
August	5	<1	0	3
September	<1	0	0	2
October	0	0	2	2
November	0	0	6	1
December	0	0	13	<1

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 78); on 2011–2025 it is August (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in LEBA’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%	42%	2%	52%	-1.5–4.9°C
February	0%	37%	1%	47%	-0.4–6.3°C
March	<1%	33%	2%	44%	2.9–8.7°C
April	4%	27%	3%	30%	8.1–12.2°C
May	16%	27%	4%	34%	13.0–18.0°C
June	24%	29%	5%	37%	16.7–20.9°C
July	39%	34%	7%	44%	18.7–22.8°C
August	42%	36%	7%	50%	19.4–23.6°C
September	17%	40%	8%	56%	15.2–19.8°C
October	3%	41%	7%	54%	10.7–14.9°C
November	<1%	46%	6%	63%	5.4–8.6°C
December	0%	45%	3%	65%	0.1–5.8°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.

1966Each stripe is one year’s mean temperature against the 60-year average. Warmest: 2024. Coolest: 1987.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3082473
NOAA station: PL000012120 · LEBA
Station distance: 47.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 54.61°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 25 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 LEBA is what differs

Gdynia→Słupsk→Rumia→Lębork→Kościerzyna→Reda→

Or put two places side by side: Wejherowo vs Gdynia

Best time to visitWejherowo.

July

July

June

The whole year,without the guesswork.

Wejherowo runs +1.8°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Wejherowo.

The whole year,
without the guesswork.

Wejherowo runs +1.8°C
on the 1961–1990 baseline.

Nearby, measured,
and named.