Home·Slovenia·Municipality of Ravne na Koroškem

Slovenia · 1991–2020

Best time to visit
Kotlje.

June leads for comfortable weather in Kotlje: typically 23.9°C by day, 11.6°C at night, with 137 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high23.9°C

Typical low11.6°C

Rain in June137 mm

Comfort

June

June · August · July

72climate match

Beach

July

July · August · June

41climate match

Outdoors

May

May · September · April

74climate match

The weakest month is January, scoring 5 against June’s 72 — days reach only 3°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

53° / -5.5°

Feb

56° / -4.4°

Mar

2110.9° / -1°

Apr

4015.7° / 3.1°

May

5720.2° / 7.7°

Jun

7223.9° / 11.6°

Jul

6825.9° / 13°

Aug

6925.6° / 12.7°

Sep

5820.4° / 8.9°

Oct

3815.2° / 5°

Nov

108.6° / 1.1°

Dec

52.9° / -4.1°

Monthly climate evidence for Kotlje — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3°C	-5.5°C	43 mm	5.6	8 h 57	5	Strong coverage
February	6°C	-4.4°C	50 mm	5.6	10 h 14	5	Strong coverage
March	10.9°C	-1°C	61 mm	7	11 h 45	21	Strong coverage
April	15.7°C	3.1°C	77 mm	9	13 h 30	40	Strong coverage
May	20.2°C	7.7°C	104 mm	11	14 h 59	57	Strong coverage
June	23.9°C	11.6°C	137 mm	11.1	15 h 48	72	Strong coverage
July	25.9°C	13°C	144 mm	10.3	15 h 28	68	Strong coverage
August	25.6°C	12.7°C	142 mm	10	14 h 11	69	Strong coverage
September	20.4°C	8.9°C	130 mm	9.1	12 h 29	58	Strong coverage
October	15.2°C	5°C	111 mm	8	10 h 49	38	Strong coverage
November	8.6°C	1.1°C	103 mm	8.7	9 h 20	10	Strong coverage
December	2.9°C	-4.1°C	70 mm	7.3	8 h 36	5	Strong coverage

What has changed

Kotlje runs +2.4°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

+3.0

Feb

+2.1

Mar

+2.8

Apr

+2.7

May

+1.0

Jun

+3.2

Jul

+2.9

Aug

+3.3

Sep

+1.5

Oct

+1.5

Nov

+2.3

Dec

+2.5

June daytime highs, 2011–2023. Last recorded: 24.9°C.

Records at SMARTNO PRI SLOVENJ GRADCU, 1961–2023
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.5°C12 Jan 1976	-27.0°C7 Jan 1985	49 mm11 Jan 2016	171 mm2014 · driest 0 mm in 2018	63
February	19.8°C28 Feb 2019	-26.0°C1 Feb 1987	63 mm19 Feb 1996	169 mm2016 · driest 0 mm in 2017	63
March	24.0°C31 Mar 2021	-24.4°C1 Mar 1963	60 mm19 Mar 2007	133 mm2007 · driest 0 mm in 2017	63
April	28.4°C30 Apr 2010	-10.8°C4 Apr 1970	62 mm29 Apr 1992	190 mm1994 · driest 9 mm in 2007	63
May	31.6°C27 May 2008	-4.3°C1 May 1976	76 mm12 May 2012	218 mm2021 · driest 29 mm in 1990	62
June	34.8°C27 Jun 2019	-2.3°C5 Jun 1962	86 mm12 Jun 1994	263 mm2004 · driest 48 mm in 2021	62
July	35.3°C28 Jul 2013	2.3°C6 Jul 1962	78 mm15 Jul 1970	307 mm1972 · driest 42 mm in 2013	63
August	37.7°C3 Aug 2013	1.0°C31 Aug 1995	115 mm3 Aug 2023	307 mm2023 · driest 25 mm in 1992	63
September	31.6°C1 Sep 2015	-3.0°C18 Sep 1971	119 mm24 Sep 1973	285 mm2001 · driest 31 mm in 1970	63
October	25.0°C17 Oct 2014	-9.4°C30 Oct 1997	129 mm8 Oct 1980	304 mm1964 · driest 1 mm in 1995	62
November	21.2°C1 Nov 2022	-19.2°C24 Nov 1988	86 mm4 Nov 1998	232 mm2000 · driest 1 mm in 2011	62
December	17.1°C17 Dec 1989	-23.4°C19 Dec 1963	73 mm5 Dec 1992	168 mm2008 · driest 0 mm in 2015	62

Typical days per month at SMARTNO PRI SLOVENJ GRADCU, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	28	1
February	0	0	24	2
March	0	0	19	2
April	<1	0	7	2
May	5	<1	<1	3
June	13	2	0	5
July	19	5	0	4
August	18	5	0	4
September	4	<1	<1	4
October	<1	0	4	4
November	0	0	13	4
December	0	0	25	2

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 78); on 2011–2025 it is June (81). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in SMARTNO PRI SLOVENJ GRADCU’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%	5%	21%	-0.9–5.3°C
February	0%	21%	6%	24%	2.0–9.5°C
March	2%	23%	7%	29%	6.1–13.7°C
April	14%	32%	9%	43%	12.4–17.2°C
May	36%	36%	11%	50%	17.1–22.0°C
June	52%	38%	16%	52%	20.6–25.2°C
July	63%	33%	15%	43%	22.8–27.5°C
August	62%	32%	14%	41%	22.0–27.5°C
September	46%	28%	13%	34%	18.2–22.8°C
October	13%	24%	11%	27%	12.5–17.8°C
November	<1%	29%	12%	36%	5.0–10.4°C
December	0%	23%	7%	27%	0.0–4.5°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.

1961Each stripe is one year’s mean temperature against the 61-year average. Warmest: 2014. Coolest: 1962.2022

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3197539
NOAA station: SIE00115136 · SMARTNO PRI SLOVENJ GRADCU
Station distance: 9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 46.52°, 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 SMARTNO PRI SLOVENJ GRADCU is what differs

Wolfsberg→Velenje→Slovenj Gradec→Ravne na Koroškem→Prevalje→Bleiburg/Pliberk→

Or put two places side by side: Kotlje vs Wolfsberg

Best time to visitKotlje.

June

July

May

The whole year,without the guesswork.

Kotlje runs +2.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Kotlje.

The whole year,
without the guesswork.

Kotlje runs +2.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.