Ventspils weather in September

In September, Ventspils sees average daytime highs of 15°C and overnight lows near 13°C, with 86 mm of rain across 12.1 wet days and about 12.5 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 14°C by the end. The sky is clear or mostly clear about 26% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of September to 11 h 18 min by month's end. Set against the rest of the year, September is Ventspils's 6th-clearest and 6th-windiest month. For the whole year in context, see Ventspils's year-round climate.

Daytime high: 15°; 3rd warmest
Overnight low: 13°; 10th coldest
Rainfall: 86 mm; 12.1 wet days
Daylight: 12 h 30 min; 6:14 AM – 6:43 PM
Cloud cover: 61%; 6th clearest
Wind: 24 km/h; 6th windiest
Solar energy: 2.81 kWh/m²
Travel score: 4.5; out of 10

Air quality: Moderate; PM2.5 10.3 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Ventspils year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 17°C in the first days to 14°C by the end.

A typical September day in Ventspils reaches about 15°C in the afternoon and slips back to 13°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 18°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	18	17	17	17	17	17	17	17	16	16	16	16	16	16	16	15	15	15	15	15	15	15	14	14	14	14	14	14	14	13
Avg low (°C)	15	15	15	15	15	15	14	14	14	14	14	14	14	14	13	13	13	13	13	13	13	12	12	12	12	12	12	12	11	11

	Avg high (°C)	Avg low (°C)
1	18	15
2	17	15
3	17	15
4	17	15
5	17	15
6	17	15
7	17	14
8	17	14
9	16	14
10	16	14
11	16	14
12	16	14
13	16	14
14	16	14
15	16	13
16	15	13
17	15	13
18	15	13
19	15	13
20	15	13
21	15	13
22	15	12
23	14	12
24	14	12
25	14	12
26	14	12
27	14	12
28	14	12
29	14	11
30	13	11

How September really feels in Ventspils

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ventspils weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	2° / -1°	58	13.1	7.7	7.1	0.0
Feb	1° / -1°	45	10.2	7.3	9	0.0
Mar	3° / 0°	38	9.4	4.6	11.4	0.0
Apr	6° / 3°	35	8.1	1.3	13.9	0.4
May	10° / 8°	37	7.4	0	16.2	2.7
Jun	15° / 13°	57	9.1	0	17.5	4.7
Jul	18° / 16°	70	10.1	0	17	6.1
Aug	19° / 17°	92	13.1	0	15	5.8
Sep	15° / 13°	86	12.1	0	12.5	4.5
Oct	11° / 9°	107	15.7	0.2	10	2.2
Nov	7° / 4°	82	15.4	1.8	7.7	0.6
Dec	4° / 1°	72	15.5	6.2	6.4	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 55%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	48	48	48	48	48	48	48	47	46	46	46	46	45	45	44	45	45	44	43	43	43	43	43	43	42	42	41	41	41	40
Cloudier (%)	52	52	52	52	52	52	52	53	54	54	54	54	55	55	56	55	55	56	57	57	57	57	57	57	58	58	59	59	59	60

	Clearer (%)	Cloudier (%)
1	48	52
2	48	52
3	48	52
4	48	52
5	48	52
6	48	52
7	48	52
8	47	53
9	46	54
10	46	54
11	46	54
12	46	54
13	45	55
14	45	55
15	44	56
16	45	55
17	45	55
18	44	56
19	43	57
20	43	57
21	43	57
22	43	57
23	43	57
24	43	57
25	42	58
26	42	58
27	41	59
28	41	59
29	41	59
30	40	60

Chance of precipitation in September

Any precipitation

Ventspils gets around 86 mm of rain over 12.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 42% and peaks near 45% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	45	44	44	43	43	42	42	42	42	42	41	41	41	41	41	40	40	40	40	40	40	40	40	40	41	41	42	42	43	44

	Rain chance (%)
1	45
2	44
3	44
4	43
5	43
6	42
7	42
8	42
9	42
10	42
11	41
12	41
13	41
14	41
15	41
16	40
17	40
18	40
19	40
20	40
21	40
22	40
23	40
24	40
25	41
26	41
27	42
28	42
29	43
30	44

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 74% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	51	53	54	56	57	59	61	62	64	66	68	70	72	74	76	77	80	81	82	83	84	85	87	88	89	89	90	91	91	92
Comfortable (%)	38	37	37	36	36	35	34	33	32	30	29	27	25	24	22	21	19	18	17	16	15	14	13	12	11	11	10	9	9	8
Humid (%)	11	10	9	8	7	6	5	5	4	4	3	3	3	2	2	2	1	1	1	1	1	1	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	51	38	11
2	53	37	10
3	54	37	9
4	56	36	8
5	57	36	7
6	59	35	6
7	61	34	5
8	62	33	5
9	64	32	4
10	66	30	4
11	68	29	3
12	70	27	3
13	72	25	3
14	74	24	2
15	76	22	2
16	77	21	2
17	80	19	1
18	81	18	1
19	82	17	1
20	83	16	1
21	84	15	1
22	85	14	1
23	87	13	0
24	88	12	0
25	89	11	0
26	89	11	0
27	90	10	0
28	91	9	0
29	91	9	0
30	92	8	0

Wind in September

Winds average 24 km/h in September.

Across September, daily wind ranges from about 22 km/h on the calmest days to 26 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	22	23	23	23	23	23	23	24	24	24	24	24	24	24	24	25	25	25	25	25	25	25	25	25	25	25	25	25	25	26
Feels	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

	Wind speed (km/h)	Feels
1	22	breezy
2	23	breezy
3	23	breezy
4	23	breezy
5	23	breezy
6	23	breezy
7	23	breezy
8	24	breezy
9	24	breezy
10	24	breezy
11	24	breezy
12	24	breezy
13	24	breezy
14	24	breezy
15	24	breezy
16	25	breezy
17	25	breezy
18	25	breezy
19	25	breezy
20	25	breezy
21	25	breezy
22	25	breezy
23	25	breezy
24	25	breezy
25	25	breezy
26	25	breezy
27	25	breezy
28	25	breezy
29	25	breezy
30	26	breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 42 min at the start of September to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 144 minutes over September. Sunrise moves from 5:41 AM to 6:44 AM, and sunset from 7:26 PM to 6:02 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	13.7	13.7	13.6	13.5	13.4	13.3	13.2	13.2	13.1	13.0	12.9	12.8	12.7	12.7	12.6	12.5	12.4	12.3	12.2	12.1	12.1	12.0	11.9	11.8	11.7	11.6	11.6	11.5	11.4	11.3
Sunrise (AM)	5:41	5:44	5:46	5:48	5:50	5:52	5:54	5:56	5:59	6:01	6:03	6:05	6:07	6:09	6:11	6:14	6:16	6:18	6:20	6:22	6:24	6:26	6:29	6:31	6:33	6:35	6:37	6:39	6:42	6:44
Sunset (PM)	7:26	7:23	7:20	7:17	7:14	7:11	7:09	7:06	7:03	7:00	6:57	6:54	6:51	6:48	6:45	6:43	6:40	6:37	6:34	6:31	6:28	6:25	6:22	6:19	6:17	6:14	6:11	6:08	6:05	6:02

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.7	5:41	7:26
2	13.7	5:44	7:23
3	13.6	5:46	7:20
4	13.5	5:48	7:17
5	13.4	5:50	7:14
6	13.3	5:52	7:11
7	13.2	5:54	7:09
8	13.2	5:56	7:06
9	13.1	5:59	7:03
10	13.0	6:01	7:00
11	12.9	6:03	6:57
12	12.8	6:05	6:54
13	12.7	6:07	6:51
14	12.7	6:09	6:48
15	12.6	6:11	6:45
16	12.5	6:14	6:43
17	12.4	6:16	6:40
18	12.3	6:18	6:37
19	12.2	6:20	6:34
20	12.1	6:22	6:31
21	12.1	6:24	6:28
22	12.0	6:26	6:25
23	11.9	6:29	6:22
24	11.8	6:31	6:19
25	11.7	6:33	6:17
26	11.6	6:35	6:14
27	11.6	6:37	6:11
28	11.5	6:39	6:08
29	11.4	6:42	6:05
30	11.3	6:44	6:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.81 kWh/m².

For context, solar energy here swings from a low near 0.27 kWh/m² to a high of 6.09 kWh/m² in June across the year — September's 2.81 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	3.5	3.5	3.4	3.4	3.3	3.3	3.2	3.2	3.1	3.1	3.0	3.0	2.9	2.9	2.8	2.8	2.7	2.7	2.6	2.6	2.5	2.5	2.5	2.4	2.4	2.3	2.3	2.2	2.2	2.1
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.5	Moderate
2	3.5	Moderate
3	3.4	Moderate
4	3.4	Moderate
5	3.3	Moderate
6	3.3	Moderate
7	3.2	Moderate
8	3.2	Moderate
9	3.1	Moderate
10	3.1	Moderate
11	3.0	Moderate
12	3.0	Moderate
13	2.9	Moderate
14	2.9	Moderate
15	2.8	Moderate
16	2.8	Moderate
17	2.7	Moderate
18	2.7	Moderate
19	2.6	Moderate
20	2.6	Moderate
21	2.5	Moderate
22	2.5	Moderate
23	2.5	Moderate
24	2.4	Moderate
25	2.4	Moderate
26	2.3	Moderate
27	2.3	Moderate
28	2.2	Moderate
29	2.2	Moderate
30	2.1	Moderate

Planning a trip in September

Is September a good time to visit Ventspils?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.5

Sightseeing

4th-best month of the year

0.5

Beach & pool

3rd-best month of the year

September is a reasonable time to visit Ventspils for sightseeing.

What to pack for Ventspils in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Ventspils sees daytime highs around 15°C and nights near 13°C. Worth packing: a warm layer, rain gear and a windbreaker. About 12 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Ventspils in September

The nearest coast averages about 16°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 18°C and coldest in March near 2°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	4	2	2	4	8	13	17	18	16	12	9	6
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Cool	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	4	Bracing
Feb	2	Bracing
Mar	2	Bracing
Apr	4	Bracing
May	8	Bracing
Jun	13	Bracing
Jul	17	Cool
Aug	18	Cool
Sep	16	Cool
Oct	12	Bracing
Nov	9	Bracing
Dec	6	Bracing

UV index in Ventspils in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ventspils peaks around June 17 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	0	1	2	3	5	6	5	5	3	1	1	0
Level	Low	Low	Low	Moderate	Moderate	High	Moderate	Moderate	Moderate	Low	Low	Low

	UV index (midday)	Level
Jan	0	Low
Feb	1	Low
Mar	2	Low
Apr	3	Moderate
May	5	Moderate
Jun	6	High
Jul	5	Moderate
Aug	5	Moderate
Sep	3	Moderate
Oct	1	Low
Nov	1	Low
Dec	0	Low

Location & terrain

Where is Ventspils?

Ventspils sits at 57.4°N, 21.6°E, 9 m above sea level, in Latvia. The nearest listed city is Kuldīga, 53 km away.

Topography around Ventspils

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ventspils.

Within 3 km, the terrain around Ventspils has only modest variations in elevation — a maximum elevation change of 38 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 68 m; within 80 km, only modest variations in elevation — a maximum elevation change of 184 m.

The land around Ventspils is covered by water (33%), grassland (23%) and trees (21%) within 3 km, water (47%) and trees (29%) within 16 km, and trees (42%) and water (39%) within 80 km.

3 km

38 m

water 33%

16 km

68 m

water 47%

80 km

184 m

trees 42%

treesgrasslandcroplandartificial surfacesbare terrainwaterwetland

← August Ventspils year-round climate October →Best places to visit in September

September weather nearby: Kuldīga 53 km · Liepāja 104 km · Tukums 107 km · Ruhnu 110 km · Kuressaare 110 km · Mazeikiai 129 km · Jūrmala 141 km · Jelgava 154 km

Latvia travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 57% of US; price level, 2025
GDP per capita: $26,312; 2025
Happiness: 6.4 / 10; World Happiness, 2025
Safe drinking water: 97%; of population, 2024
Homicide rate: 2.5; per 100k, 2023
Road deaths: 8.1; per 100k/yr, 2019
Income group: High; World Bank
English: High; EF EPI 599
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Ventspils (57.3948°, 21.5612°, elevation 9 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	18	15
2	17	15
3	17	15
4	17	15
5	17	15
6	17	15
7	17	14
8	17	14
9	16	14
10	16	14
11	16	14
12	16	14
13	16	14
14	16	14
15	16	13
16	15	13
17	15	13
18	15	13
19	15	13
20	15	13
21	15	13
22	15	12
23	14	12
24	14	12
25	14	12
26	14	12
27	14	12
28	14	12
29	14	11
30	13	11

	Clearer (%)	Cloudier (%)
1	48	52
2	48	52
3	48	52
4	48	52
5	48	52
6	48	52
7	48	52
8	47	53
9	46	54
10	46	54
11	46	54
12	46	54
13	45	55
14	45	55
15	44	56
16	45	55
17	45	55
18	44	56
19	43	57
20	43	57
21	43	57
22	43	57
23	43	57
24	43	57
25	42	58
26	42	58
27	41	59
28	41	59
29	41	59
30	40	60

	Rain chance (%)
1	45
2	44
3	44
4	43
5	43
6	42
7	42
8	42
9	42
10	42
11	41
12	41
13	41
14	41
15	41
16	40
17	40
18	40
19	40
20	40
21	40
22	40
23	40
24	40
25	41
26	41
27	42
28	42
29	43
30	44

	Dry (%)	Comfortable (%)	Humid (%)
1	51	38	11
2	53	37	10
3	54	37	9
4	56	36	8
5	57	36	7
6	59	35	6
7	61	34	5
8	62	33	5
9	64	32	4
10	66	30	4
11	68	29	3
12	70	27	3
13	72	25	3
14	74	24	2
15	76	22	2
16	77	21	2
17	80	19	1
18	81	18	1
19	82	17	1
20	83	16	1
21	84	15	1
22	85	14	1
23	87	13	0
24	88	12	0
25	89	11	0
26	89	11	0
27	90	10	0
28	91	9	0
29	91	9	0
30	92	8	0

	Avg high (°C)	Avg low (°C)
1	18	15
2	17	15
3	17	15
4	17	15
5	17	15
6	17	15
7	17	14
8	17	14
9	16	14
10	16	14
11	16	14
12	16	14
13	16	14
14	16	14
15	16	13
16	15	13
17	15	13
18	15	13
19	15	13
20	15	13
21	15	13
22	15	12
23	14	12
24	14	12
25	14	12
26	14	12
27	14	12
28	14	12
29	14	11
30	13	11

	Clearer (%)	Cloudier (%)
1	48	52
2	48	52
3	48	52
4	48	52
5	48	52
6	48	52
7	48	52
8	47	53
9	46	54
10	46	54
11	46	54
12	46	54
13	45	55
14	45	55
15	44	56
16	45	55
17	45	55
18	44	56
19	43	57
20	43	57
21	43	57
22	43	57
23	43	57
24	43	57
25	42	58
26	42	58
27	41	59
28	41	59
29	41	59
30	40	60

	Rain chance (%)
1	45
2	44
3	44
4	43
5	43
6	42
7	42
8	42
9	42
10	42
11	41
12	41
13	41
14	41
15	41
16	40
17	40
18	40
19	40
20	40
21	40
22	40
23	40
24	40
25	41
26	41
27	42
28	42
29	43
30	44

	Dry (%)	Comfortable (%)	Humid (%)
1	51	38	11
2	53	37	10
3	54	37	9
4	56	36	8
5	57	36	7
6	59	35	6
7	61	34	5
8	62	33	5
9	64	32	4
10	66	30	4
11	68	29	3
12	70	27	3
13	72	25	3
14	74	24	2
15	76	22	2
16	77	21	2
17	80	19	1
18	81	18	1
19	82	17	1
20	83	16	1
21	84	15	1
22	85	14	1
23	87	13	0
24	88	12	0
25	89	11	0
26	89	11	0
27	90	10	0
28	91	9	0
29	91	9	0
30	92	8	0

	Avg high (°C)	Avg low (°C)
1	18	15
2	17	15
3	17	15
4	17	15
5	17	15
6	17	15
7	17	14
8	17	14
9	16	14
10	16	14
11	16	14
12	16	14
13	16	14
14	16	14
15	16	13
16	15	13
17	15	13
18	15	13
19	15	13
20	15	13
21	15	13
22	15	12
23	14	12
24	14	12
25	14	12
26	14	12
27	14	12
28	14	12
29	14	11
30	13	11

	Clearer (%)	Cloudier (%)
1	48	52
2	48	52
3	48	52
4	48	52
5	48	52
6	48	52
7	48	52
8	47	53
9	46	54
10	46	54
11	46	54
12	46	54
13	45	55
14	45	55
15	44	56
16	45	55
17	45	55
18	44	56
19	43	57
20	43	57
21	43	57
22	43	57
23	43	57
24	43	57
25	42	58
26	42	58
27	41	59
28	41	59
29	41	59
30	40	60

	Rain chance (%)
1	45
2	44
3	44
4	43
5	43
6	42
7	42
8	42
9	42
10	42
11	41
12	41
13	41
14	41
15	41
16	40
17	40
18	40
19	40
20	40
21	40
22	40
23	40
24	40
25	41
26	41
27	42
28	42
29	43
30	44

	Dry (%)	Comfortable (%)	Humid (%)
1	51	38	11
2	53	37	10
3	54	37	9
4	56	36	8
5	57	36	7
6	59	35	6
7	61	34	5
8	62	33	5
9	64	32	4
10	66	30	4
11	68	29	3
12	70	27	3
13	72	25	3
14	74	24	2
15	76	22	2
16	77	21	2
17	80	19	1
18	81	18	1
19	82	17	1
20	83	16	1
21	84	15	1
22	85	14	1
23	87	13	0
24	88	12	0
25	89	11	0
26	89	11	0
27	90	10	0
28	91	9	0
29	91	9	0
30	92	8	0