Poland · 1991–2020

Best time to visit
Suwałki.

July leads for comfortable weather in Suwałki: typically 23.9°C by day, 12.9°C at night, with 90 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high23.9°C

Typical low12.9°C

Rain in July90 mm

Comfort

July

July · August · June

82climate match

Beach

July

July · August · June

45climate match

Outdoors

June

June · September · May

81climate match

The weakest month is January, scoring 5 against July’s 82 — days reach only -0.3°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

5-0.3° / -5°

Feb

50.4° / -5.3°

Mar

54.9° / -2.7°

Apr

3612.9° / 2.5°

May

5818.5° / 6.9°

Jun

7221.4° / 10.3°

Jul

8223.9° / 12.9°

Aug

8223.2° / 12°

Sep

5917.6° / 7.9°

Oct

2810.9° / 4°

Nov

54.1° / -0.2°

Dec

50.3° / -4.1°

Monthly climate evidence for Suwałki — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-0.3°C	-5°C	42 mm	10.6	7 h 53	5	Good coverage
February	0.4°C	-5.3°C	39 mm	10.9	9 h 39	5	Good coverage
March	4.9°C	-2.7°C	40 mm	9.7	11 h 39	5	Good coverage
April	12.9°C	2.5°C	39 mm	7.6	13 h 57	36	Good coverage
May	18.5°C	6.9°C	57 mm	10.1	15 h 57	58	Good coverage
June	21.4°C	10.3°C	68 mm	10.4	17 h 08	72	Good coverage
July	23.9°C	12.9°C	90 mm	10.2	16 h 39	82	Good coverage
August	23.2°C	12°C	67 mm	9.5	14 h 52	82	Good coverage
September	17.6°C	7.9°C	56 mm	8	12 h 37	59	Good coverage
October	10.9°C	4°C	55 mm	9.6	10 h 25	28	Good coverage
November	4.1°C	-0.2°C	44 mm	9.3	8 h 25	5	Good coverage
December	0.3°C	-4.1°C	44 mm	10.1	7 h 23	5	Good coverage

Records at LAZDIJAI, 1970–2009
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	12.6°C10 Jan 2007	-30.5°C7 Jan 2003	19 mm26 Jan 2008	88 mm2007 · driest 12 mm in 1974	40
February	15.1°C21 Feb 1990	-27.4°C1 Feb 1970	14 mm22 Feb 2006	62 mm2002 · driest 3 mm in 1976	40
March	19.3°C21 Mar 1974	-24.9°C3 Mar 1987	17 mm20 Mar 2001	83 mm1994 · driest 9 mm in 1984	40
April	27.3°C28 Apr 2000	-8.0°C23 Apr 1981	26 mm13 Apr 1996	95 mm1994 · driest 3 mm in 1974	40
May	31.1°C26 May 2007	-4.4°C2 May 2007	33 mm29 May 1993	86 mm1997 · driest 18 mm in 1980	40
June	31.9°C29 Jun 1997	0.2°C2 Jun 1977	44 mm24 Jun 1990	145 mm1974 · driest 25 mm in 2003	40
July	34.5°C31 Jul 1994	4.9°C18 Jul 1971	61 mm18 Jul 2001	199 mm1993 · driest 12 mm in 1999	40
August	34.7°C10 Aug 1992	3.1°C28 Aug 1993	80 mm4 Aug 1972	156 mm1972 · driest 11 mm in 1983	40
September	29.6°C1 Sep 1992	-3.4°C28 Sep 1986	68 mm6 Sep 1992	144 mm1992 · driest 17 mm in 1989	40
October	23.5°C5 Oct 1985	-12.0°C24 Oct 2003	34 mm8 Oct 2002	181 mm1974 · driest 2 mm in 2000	40
November	15.2°C1 Nov 2001	-18.9°C21 Nov 1998	28 mm1 Nov 1995	93 mm2000 · driest 13 mm in 1993	39
December	11.0°C6 Dec 2006	-28.8°C27 Dec 1996	19 mm6 Dec 1992	82 mm1974 · driest 11 mm in 1972	40

Typical days per month at LAZDIJAI, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	24	<1
February	0	0	22	<1
March	0	0	21	<1
April	<1	0	10	<1
May	3	<1	1	2
June	6	<1	0	2
July	12	2	0	3
August	10	<1	0	2
September	1	0	<1	2
October	0	0	6	1
November	0	0	14	<1
December	0	0	23	<1

How often, not how much — every day in LAZDIJAI’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%	29%	<1%	35%	-5.6–2.7°C
February	0%	29%	<1%	35%	-3.7–4.2°C
March	0%	27%	<1%	32%	1.2–7.2°C
April	7%	26%	2%	30%	9.4–14.0°C
May	29%	30%	4%	37%	15.9–20.3°C
June	43%	34%	7%	48%	19.4–23.2°C
July	56%	35%	9%	45%	20.2–26.1°C
August	58%	31%	7%	40%	20.1–24.7°C
September	21%	29%	5%	37%	14.2–19.5°C
October	2%	28%	3%	35%	8.3–12.7°C
November	0%	31%	2%	42%	1.9–6.5°C
December	0%	32%	1%	42%	-2.6–2.5°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.

1970Each stripe is one year’s mean temperature against the 39-year average. Warmest: 2000. Coolest: 1987.2009

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 757718
NOAA station: LH000026728 · LAZDIJAI
Station distance: 40.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 54.11°, 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 LAZDIJAI is what differs

Alytus→Marijampolė→Druskininkai→Sejny→Kalvarija→Lazdijai→

Or put two places side by side: Suwałki vs Alytus

Best time to visitSuwałki.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Suwałki.

The whole year,
without the guesswork.

Nearby, measured,
and named.