Belarus · 1991–2020

Best time to visit
Svislach.

August leads for comfortable weather in Svislach: typically 23.7°C by day, 11°C at night, with 72 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high23.7°C

Typical low11°C

Rain in August72 mm

Comfort

August

August · July · June

81climate match

Beach

July

July · August · June

45climate match

Outdoors

June

June · September · May

79climate match

The weakest month is January, scoring 5 against August’s 81 — days reach only -0.5°C, 24° 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

5-0.5° / -5.8°

Feb

51.1° / -5.4°

Mar

56.1° / -3°

Apr

3613.6° / 1.6°

May

5519.2° / 6°

Jun

7422.1° / 9.8°

Jul

8024.3° / 12.1°

Aug

8123.7° / 11°

Sep

5718.1° / 7.1°

Oct

2911.7° / 3°

Nov

55.3° / -0.2°

Dec

51.1° / -3.9°

Monthly climate evidence for Svislach — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-0.5°C	-5.8°C	37 mm	10.2	8 h 04	5	Strong coverage
February	1.1°C	-5.4°C	36 mm	9.3	9 h 45	5	Strong coverage
March	6.1°C	-3°C	36 mm	8.8	11 h 40	5	Strong coverage
April	13.6°C	1.6°C	42 mm	8.1	13 h 52	36	Strong coverage
May	19.2°C	6°C	84 mm	10	15 h 47	55	Strong coverage
June	22.1°C	9.8°C	72 mm	9.5	16 h 54	74	Strong coverage
July	24.3°C	12.1°C	84 mm	10.3	16 h 27	80	Strong coverage
August	23.7°C	11°C	72 mm	8.9	14 h 45	81	Strong coverage
September	18.1°C	7.1°C	65 mm	8.9	12 h 36	57	Strong coverage
October	11.7°C	3°C	63 mm	9.1	10 h 29	29	Strong coverage
November	5.3°C	-0.2°C	42 mm	9.4	8 h 34	5	Strong coverage
December	1.1°C	-3.9°C	47 mm	11.2	7 h 35	5	Strong coverage

What has changed

Svislach runs +2.1°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

+2.0

Feb

+2.5

Mar

+2.8

Apr

+1.8

May

+0.9

Jun

+2.6

Jul

+2.5

Aug

+2.6

Sep

+2.3

Oct

+1.2

Nov

+1.4

Dec

+2.3

August daytime highs, 2011–2025. Last recorded: 23.6°C.

Records at BIALYSTOK, 1952–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.9°C1 Jan 2023	-34.6°C30 Jan 1987	21 mm19 Jan 2007	84 mm2022 · driest 1 mm in 1997	65
February	16.4°C21 Feb 1990	-31.1°C1 Feb 1956	60 mm4 Feb 2022	104 mm2022 · driest 0 mm in 1984	65
March	20.3°C21 Mar 2014	-23.6°C3 Mar 1987	51 mm25 Mar 1981	79 mm1981 · driest 0 mm in 1982	66
April	29.3°C30 Apr 2012	-8.0°C23 Apr 1981	32 mm2 Apr 2018	103 mm1994 · driest 1 mm in 1984	66
May	31.1°C29 May 2005	-5.0°C5 May 1980	88 mm8 May 2017	154 mm1994 · driest 2 mm in 1986	66
June	35.7°C28 Jun 2026	-0.2°C3 Jun 1991	56 mm23 Jun 2020	145 mm2009 · driest 0 mm in 2025	66
July	36.1°C12 Jul 1959	-1.1°C3 Jul 1990	58 mm13 Jul 2010	186 mm2016 · driest 1 mm in 1986	65
August	35.2°C29 Aug 1992	0.1°C27 Aug 1984	69 mm5 Aug 1979	217 mm2006 · driest 2 mm in 1983	65
September	33.6°C1 Sep 2015	-5.1°C27 Sep 1986	101 mm19 Sep 1993	167 mm2013 · driest 3 mm in 1982	64
October	23.9°C2 Oct 1956	-11.1°C31 Oct 1956	106 mm7 Oct 1993	208 mm1993 · driest 0 mm in 1982	65
November	18.5°C6 Nov 2014	-19.2°C22 Nov 1998	80 mm22 Nov 1986	172 mm2022 · driest 0 mm in 1982	65
December	13.9°C5 Dec 1961	-29.0°C27 Dec 1996	60 mm10 Dec 2022	281 mm2021 · driest 0 mm in 1984	65

Typical days per month at BIALYSTOK, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	17	<1
February	0	0	17	<1
March	0	0	17	<1
April	<1	0	9	1
May	4	<1	2	2
June	8	<1	0	2
July	13	3	0	2
August	11	2	0	2
September	2	<1	<1	1
October	0	0	6	1
November	0	0	10	<1
December	0	0	17	<1

How often, not how much — every day in BIALYSTOK’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%	39%	<1%	48%	-5.0–3.2°C
February	0%	36%	2%	35%	-3.8–4.8°C
March	<1%	32%	1%	36%	0.7–9.1°C
April	10%	31%	3%	33%	10.1–15.5°C
May	33%	33%	6%	46%	15.8–21.0°C
June	50%	36%	9%	45%	19.6–24.5°C
July	54%	39%	9%	52%	20.5–26.6°C
August	61%	31%	7%	40%	20.4–25.9°C
September	29%	32%	5%	38%	14.7–20.5°C
October	4%	31%	5%	39%	9.4–14.0°C
November	0%	36%	3%	39%	2.5–7.3°C
December	0%	39%	3%	49%	-2.3–3.6°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.

1953Each stripe is one year’s mean temperature against the 59-year average. Warmest: 2024. Coolest: 1987.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 621048
NOAA station: PLM00012295 · BIALYSTOK
Station distance: 62.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 53.03°, 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 BIALYSTOK is what differs

Białystok→Łomża→Bielsk Podlaski→Zambrów→Grajewo→Hajnówka→

Or put two places side by side: Svislach vs Białystok

Best time to visitSvislach.