Home·Slovenia·Municipality of Šempeter–Vrtojba

Slovenia · 1991–2020

Best time to visit
Šempeter pri Gorici.

June leads for comfortable weather in Šempeter pri Gorici: typically 27.1°C by day, 14.9°C at night, with 108 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high27.1°C

Typical low14.9°C

Rain in June108 mm

Comfort

June

June · May · September

74climate match

Beach

July

July · August · June

68climate match

Outdoors

April

April · October · May

72climate match

The weakest month is December, scoring 7 against June’s 74 — 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

108.3° / -0.3°

Feb

1810.1° / 0°

Mar

3614.2° / 3.2°

Apr

5318.4° / 6.9°

May

7323.1° / 11.3°

Jun

7427.1° / 14.9°

Jul

6429.6° / 16.6°

Aug

6429.7° / 16.5°

Sep

6924.2° / 12.2°

Oct

5119° / 8.8°

Nov

2213.6° / 5°

Dec

79.2° / 0.7°

Monthly climate evidence for Šempeter pri Gorici — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 34 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	8.3°C	-0.3°C	86 mm	6.9	10.8°C	9 h 01	10	Strong coverage
February	10.1°C	0°C	79 mm	5.9	9.6°C	10 h 16	18	Strong coverage
March	14.2°C	3.2°C	85 mm	6.7	10.1°C	11 h 45	36	Strong coverage
April	18.4°C	6.9°C	96 mm	8.9	13.1°C	13 h 28	53	Strong coverage
May	23.1°C	11.3°C	117 mm	9.5	17.9°C	14 h 55	73	Strong coverage
June	27.1°C	14.9°C	108 mm	9.2	22.5°C	15 h 43	74	Strong coverage
July	29.6°C	16.6°C	104 mm	8.1	25.0°C	15 h 24	64	Strong coverage
August	29.7°C	16.5°C	112 mm	7.4	25.4°C	14 h 08	64	Strong coverage
September	24.2°C	12.2°C	175 mm	8.9	22.6°C	12 h 29	69	Strong coverage
October	19°C	8.8°C	146 mm	9.4	19.3°C	10 h 50	51	Strong coverage
November	13.6°C	5°C	175 mm	10.2	16.2°C	9 h 23	22	Strong coverage
December	9.2°C	0.7°C	133 mm	8.2	13.2°C	8 h 40	7	Strong coverage

Records at BILJE, 1992–2023
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.8°C15 Jan 2007	-11.7°C26 Jan 2000	74 mm4 Jan 2014	383 mm2014 · driest 2 mm in 2000	32
February	25.3°C24 Feb 2021	-10.3°C23 Feb 1993	61 mm19 Feb 2010	284 mm2016 · driest 0 mm in 2023	32
March	25.4°C29 Mar 2017	-11.5°C1 Mar 2005	136 mm29 Mar 2009	311 mm2013 · driest 0 mm in 2017	32
April	30.5°C28 Apr 2012	-5.3°C8 Apr 2003	75 mm12 Apr 2021	259 mm1998 · driest 2 mm in 2007	32
May	33.7°C24 May 2007	2.6°C17 May 2012	139 mm30 May 2010	274 mm2013 · driest 19 mm in 1993	31
June	37.0°C12 Jun 2003	4.0°C9 Jun 2005	100 mm10 Jun 1995	204 mm1995 · driest 12 mm in 2021	31
July	38.6°C21 Jul 2006	7.5°C5 Jul 2007	92 mm20 Jul 1997	229 mm2008 · driest 18 mm in 2006	32
August	39.0°C5 Aug 2017	6.1°C31 Aug 2010	82 mm28 Aug 1995	326 mm2002 · driest 2 mm in 2011	32
September	33.3°C3 Sep 2011	0.0°C10 Sep 2019	202 mm13 Sep 1997	471 mm1993 · driest 21 mm in 2018	32
October	29.8°C1 Oct 2011	-4.8°C26 Oct 2003	162 mm27 Oct 2012	371 mm2012 · driest 13 mm in 1995	31
November	25.0°C2 Nov 2004	-6.7°C23 Nov 2008	141 mm20 Nov 2000	528 mm2000 · driest 18 mm in 2011	31
December	18.1°C23 Dec 2016	-13.9°C20 Dec 2009	103 mm26 Dec 1995	280 mm2008 · driest 0 mm in 2016	31

Typical days per month at BILJE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	18	3
February	0	0	16	3
March	0	0	7	3
April	2	0	<1	3
May	10	1	0	4
June	21	8	0	3
July	28	15	0	3
August	28	15	0	4
September	13	2	0	5
October	1	0	<1	4
November	0	0	6	5
December	0	0	15	4

How often, not how much — every day in BILJE’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%	22%	9%	24%	6.4–10.2°C
February	<1%	20%	9%	23%	7.8–12.4°C
March	8%	21%	8%	26%	11.4–16.9°C
April	33%	30%	11%	38%	16.8–21.0°C
May	62%	31%	13%	38%	20.7–25.6°C
June	69%	30%	11%	36%	25.7–29.6°C
July	74%	26%	11%	28%	27.3–32.1°C
August	76%	24%	12%	26%	27.5–32.1°C
September	65%	30%	16%	39%	21.8–26.9°C
October	32%	30%	14%	36%	17.7–21.2°C
November	3%	34%	16%	45%	12.2–14.9°C
December	0%	27%	13%	33%	7.3–10.5°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.

1992Each stripe is one year’s mean temperature against the 29-year average. Warmest: 2022. Coolest: 2005.2022

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3191063
NOAA station: SIE00115106 · BILJE
Station distance: 4.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 45.93°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 34 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 BILJE is what differs

Udine→Gorizia→Monfalcone→Rosa→Nova Gorica→Codroipo→

Or put two places side by side: Šempeter pri Gorici vs Udine

Best time to visitŠempeter pri Gorici.