Zarautz weather in September

In September, Zarautz sees average daytime highs of 21°C and overnight lows near 15°C, with 89 mm of rain across 12.8 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 20°C by the end. The sky is clear or mostly clear about 33% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Zarautz's 2nd-clearest and 9th-windiest month. For the whole year in context, see Zarautz's year-round climate.

Daytime high: 21°; 3rd warmest
Overnight low: 15°; 10th coldest
Rainfall: 89 mm; 12.8 wet days
Daylight: 12 h 18 min; 6:54 AM – 7:12 PM
Cloud cover: 55%; 2nd clearest
Wind: 10 km/h; 9th windiest
Solar energy: 4.17 kWh/m²
Travel score: 6.0; out of 10

← August Zarautz 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 22°C in the first days to 20°C by the end.

A typical September day in Zarautz reaches about 21°C in the afternoon and slips back to 15°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°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)	22	22	22	22	22	22	22	22	21	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	20	20	20	20	20
Avg low (°C)	16	16	16	16	16	16	16	15	15	15	15	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	14	14	14	14

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

Zarautz weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	11° / 6°	133	15.4	1	9.2	2.3
Feb	11° / 6°	120	13.9	1.7	10.2	2.4
Mar	13° / 8°	114	14.2	0.7	11.6	3.4
Apr	15° / 9°	123	15.9	0.1	13.2	3.7
May	17° / 12°	112	15.3	0	14.5	4.9
Jun	20° / 14°	86	12.8	0	15.1	5.8
Jul	22° / 16°	77	12.6	0	14.9	6.4
Aug	23° / 17°	79	12.3	0	13.8	6.6
Sep	21° / 15°	89	12.8	0	12.3	6.0
Oct	18° / 13°	122	14.2	0	10.8	5.3
Nov	14° / 9°	167	15.8	0.1	9.5	3.4
Dec	11° / 7°	134	14.9	0.5	8.9	2.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 50%.

	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 (%)	54	54	55	55	55	54	55	54	54	53	53	52	52	51	51	49	49	48	48	49	49	48	48	48	47	47	45	45	45	44
Cloudier (%)	46	46	45	45	45	46	45	46	46	47	47	48	48	49	49	51	51	52	52	51	51	52	52	52	53	53	55	55	55	56

	Clearer (%)	Cloudier (%)
1	54	46
2	54	46
3	55	45
4	55	45
5	55	45
6	54	46
7	55	45
8	54	46
9	54	46
10	53	47
11	53	47
12	52	48
13	52	48
14	51	49
15	51	49
16	49	51
17	49	51
18	48	52
19	48	52
20	49	51
21	49	51
22	48	52
23	48	52
24	48	52
25	47	53
26	47	53
27	45	55
28	45	55
29	45	55
30	44	56

Chance of precipitation in September

Any precipitation

Zarautz gets around 89 mm of rain over 12.8 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 44% and peaks near 46% 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 (%)	41	40	40	40	40	40	40	41	41	41	42	43	43	44	45	45	46	46	46	46	46	46	46	46	46	46	46	46	46	46

	Rain chance (%)
1	41
2	40
3	40
4	40
5	40
6	40
7	40
8	41
9	41
10	41
11	42
12	43
13	43
14	44
15	45
16	45
17	46
18	46
19	46
20	46
21	46
22	46
23	46
24	46
25	46
26	46
27	46
28	46
29	46
30	46

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 37% 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 (%)	18	20	21	22	23	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37	38	39	39	40	41	42	43	44	45	47
Comfortable (%)	36	36	36	37	37	37	37	36	36	36	35	35	35	35	35	35	35	36	36	37	37	38	39	39	39	39	39	39	39	38
Humid (%)	34	33	33	32	32	32	31	31	31	31	31	31	30	30	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15
Muggy (%)	11	11	10	10	9	8	8	7	7	6	6	5	5	4	4	3	3	2	2	1	1	1	1	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	18	36	34	11
2	20	36	33	11
3	21	36	33	10
4	22	37	32	10
5	23	37	32	9
6	23	37	32	8
7	24	37	31	8
8	25	36	31	7
9	26	36	31	7
10	27	36	31	6
11	28	35	31	6
12	29	35	31	5
13	30	35	30	5
14	31	35	30	4
15	32	35	30	4
16	33	35	29	3
17	34	35	28	3
18	35	36	27	2
19	36	36	26	2
20	37	37	25	1
21	38	37	24	1
22	39	38	23	1
23	39	39	22	1
24	40	39	21	0
25	41	39	20	0
26	42	39	19	0
27	43	39	18	0
28	44	39	17	0
29	45	39	16	0
30	47	38	15	0

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 11 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)	9	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11	11	11	11	11	11	11	11	11	11	11
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 6:37 AM to 7:11 AM, and sunset from 7:40 PM to 6:45 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)	13.0	13.0	12.9	12.9	12.8	12.8	12.7	12.7	12.6	12.6	12.5	12.5	12.4	12.4	12.3	12.3	12.2	12.2	12.1	12.1	12.0	12.0	11.9	11.9	11.8	11.8	11.7	11.7	11.6	11.6
Sunrise (AM)	6:37	6:38	6:39	6:41	6:42	6:43	6:44	6:45	6:46	6:47	6:49	6:50	6:51	6:52	6:53	6:54	6:55	6:57	6:58	6:59	7:00	7:01	7:02	7:03	7:05	7:06	7:07	7:08	7:09	7:11
Sunset (PM)	7:40	7:38	7:36	7:34	7:32	7:30	7:29	7:27	7:25	7:23	7:21	7:19	7:17	7:16	7:14	7:12	7:10	7:08	7:06	7:04	7:02	7:00	6:59	6:57	6:55	6:53	6:51	6:49	6:47	6:45

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.0	6:37	7:40
2	13.0	6:38	7:38
3	12.9	6:39	7:36
4	12.9	6:41	7:34
5	12.8	6:42	7:32
6	12.8	6:43	7:30
7	12.7	6:44	7:29
8	12.7	6:45	7:27
9	12.6	6:46	7:25
10	12.6	6:47	7:23
11	12.5	6:49	7:21
12	12.5	6:50	7:19
13	12.4	6:51	7:17
14	12.4	6:52	7:16
15	12.3	6:53	7:14
16	12.3	6:54	7:12
17	12.2	6:55	7:10
18	12.2	6:57	7:08
19	12.1	6:58	7:06
20	12.1	6:59	7:04
21	12.0	7:00	7:02
22	12.0	7:01	7:00
23	11.9	7:02	6:59
24	11.9	7:03	6:57
25	11.8	7:05	6:55
26	11.8	7:06	6:53
27	11.7	7:07	6:51
28	11.7	7:08	6:49
29	11.6	7:09	6:47
30	11.6	7:11	6:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.17 kWh/m².

For context, solar energy here swings from a low near 1.39 kWh/m² to a high of 5.87 kWh/m² in June across the year — September's 4.17 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)	4.7	4.7	4.7	4.6	4.6	4.5	4.5	4.5	4.4	4.4	4.3	4.3	4.2	4.2	4.1	4.1	4.0	4.0	4.0	3.9	3.9	3.8	3.8	3.8	3.7	3.7	3.6	3.6	3.5	3.5
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.7	Bright
2	4.7	Bright
3	4.7	Bright
4	4.6	Bright
5	4.6	Bright
6	4.5	Bright
7	4.5	Bright
8	4.5	Bright
9	4.4	Bright
10	4.4	Bright
11	4.3	Bright
12	4.3	Bright
13	4.2	Bright
14	4.2	Bright
15	4.1	Bright
16	4.1	Bright
17	4.0	Bright
18	4.0	Bright
19	4.0	Moderate
20	3.9	Moderate
21	3.9	Moderate
22	3.8	Moderate
23	3.8	Moderate
24	3.8	Moderate
25	3.7	Moderate
26	3.7	Moderate
27	3.6	Moderate
28	3.6	Moderate
29	3.5	Moderate
30	3.5	Moderate

Planning a trip in September

Is September a good time to visit Zarautz?

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

6.0

Sightseeing

3rd-best month of the year

3.6

Beach & pool

3rd-best month of the year

September is a reasonable time to visit Zarautz for sightseeing.

What to pack for Zarautz in September

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

In September, Zarautz sees daytime highs around 21°C and nights near 15°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Zarautz in September

The nearest coast averages about 21°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 22°C and coldest in February near 12°C.

It's comfortable for a long swim from Jul 2 to Sep 25 — about 2.8 months when the water holds above 20°C.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	13	12	13	14	16	19	21	22	21	18	16	14
Comfort	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Refreshing	Refreshing	Refreshing	Cool	Cool	Bracing

	Sea temperature (°C)	Comfort
Jan	13	Bracing
Feb	12	Bracing
Mar	13	Bracing
Apr	14	Bracing
May	16	Cool
Jun	19	Cool
Jul	21	Refreshing
Aug	22	Refreshing
Sep	21	Refreshing
Oct	18	Cool
Nov	16	Cool
Dec	14	Bracing

UV index in Zarautz in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Zarautz peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	2	5	6	6	8	9	8	5	4	2	1
Level	Low	Low	Moderate	High	High	Very high	Very high	Very high	High	Moderate	Low	Low

	UV index (midday)	Level
Jan	2	Low
Feb	2	Low
Mar	5	Moderate
Apr	6	High
May	6	High
Jun	8	Very high
Jul	9	Very high
Aug	8	Very high
Sep	5	High
Oct	4	Moderate
Nov	2	Low
Dec	1	Low

Location & terrain

Where is Zarautz?

Zarautz sits at 43.3°N, 2.2°W, 6 m above sea level, in Spain. The nearest listed city is Lasarte, 12 km away.

Topography around Zarautz

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

Within 3 km, the terrain around Zarautz has significant variations in elevation — a maximum elevation change of 295 m around an average of 63 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,056 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,533 m.

The land around Zarautz is covered by trees (37%), water (33%) and grassland (22%) within 3 km, water (42%) and trees (39%) within 16 km, and trees (46%) and water (29%) within 80 km.

3 km

295 m

trees 37%

16 km

1,056 m

water 42%

80 km

1,533 m

trees 46%

treesgrasslandcroplandartificial surfacesbare terrainwater

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

September weather nearby: Lasarte 12 km · Oria 13 km · Hernani 16 km · San Sebastian 16 km · Tolosa 18 km · Pasaia 20 km · Errenteria 22 km · Eibar 27 km

Spain travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 65% of US; price level, 2025
GDP per capita: $38,627; 2025
Happiness: 6.5 / 10; World Happiness, 2025
Safe drinking water: 99%; of population, 2024
Homicide rate: 0.7; per 100k, 2023
Road deaths: 3.9; per 100k/yr, 2019
Income group: High; World Bank
English: Moderate; EF EPI 540
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 Zarautz (43.2844°, -2.1699°, elevation 6 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	22	16
2	22	16
3	22	16
4	22	16
5	22	16
6	22	16
7	22	16
8	22	15
9	21	15
10	21	15
11	21	15
12	21	15
13	21	15
14	21	15
15	21	15
16	21	15
17	21	15
18	21	15
19	21	15
20	20	15
21	20	15
22	20	14
23	20	14
24	20	14
25	20	14
26	20	14
27	20	14
28	20	14
29	20	14
30	20	14

	Clearer (%)	Cloudier (%)
1	54	46
2	54	46
3	55	45
4	55	45
5	55	45
6	54	46
7	55	45
8	54	46
9	54	46
10	53	47
11	53	47
12	52	48
13	52	48
14	51	49
15	51	49
16	49	51
17	49	51
18	48	52
19	48	52
20	49	51
21	49	51
22	48	52
23	48	52
24	48	52
25	47	53
26	47	53
27	45	55
28	45	55
29	45	55
30	44	56

	Rain chance (%)
1	41
2	40
3	40
4	40
5	40
6	40
7	40
8	41
9	41
10	41
11	42
12	43
13	43
14	44
15	45
16	45
17	46
18	46
19	46
20	46
21	46
22	46
23	46
24	46
25	46
26	46
27	46
28	46
29	46
30	46

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	18	36	34	11
2	20	36	33	11
3	21	36	33	10
4	22	37	32	10
5	23	37	32	9
6	23	37	32	8
7	24	37	31	8
8	25	36	31	7
9	26	36	31	7
10	27	36	31	6
11	28	35	31	6
12	29	35	31	5
13	30	35	30	5
14	31	35	30	4
15	32	35	30	4
16	33	35	29	3
17	34	35	28	3
18	35	36	27	2
19	36	36	26	2
20	37	37	25	1
21	38	37	24	1
22	39	38	23	1
23	39	39	22	1
24	40	39	21	0
25	41	39	20	0
26	42	39	19	0
27	43	39	18	0
28	44	39	17	0
29	45	39	16	0
30	47	38	15	0

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

	Clearer (%)	Cloudier (%)
1	54	46
2	54	46
3	55	45
4	55	45
5	55	45
6	54	46
7	55	45
8	54	46
9	54	46
10	53	47
11	53	47
12	52	48
13	52	48
14	51	49
15	51	49
16	49	51
17	49	51
18	48	52
19	48	52
20	49	51
21	49	51
22	48	52
23	48	52
24	48	52
25	47	53
26	47	53
27	45	55
28	45	55
29	45	55
30	44	56

	Rain chance (%)
1	41
2	40
3	40
4	40
5	40
6	40
7	40
8	41
9	41
10	41
11	42
12	43
13	43
14	44
15	45
16	45
17	46
18	46
19	46
20	46
21	46
22	46
23	46
24	46
25	46
26	46
27	46
28	46
29	46
30	46

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	18	36	34	11
2	20	36	33	11
3	21	36	33	10
4	22	37	32	10
5	23	37	32	9
6	23	37	32	8
7	24	37	31	8
8	25	36	31	7
9	26	36	31	7
10	27	36	31	6
11	28	35	31	6
12	29	35	31	5
13	30	35	30	5
14	31	35	30	4
15	32	35	30	4
16	33	35	29	3
17	34	35	28	3
18	35	36	27	2
19	36	36	26	2
20	37	37	25	1
21	38	37	24	1
22	39	38	23	1
23	39	39	22	1
24	40	39	21	0
25	41	39	20	0
26	42	39	19	0
27	43	39	18	0
28	44	39	17	0
29	45	39	16	0
30	47	38	15	0

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

	Clearer (%)	Cloudier (%)
1	54	46
2	54	46
3	55	45
4	55	45
5	55	45
6	54	46
7	55	45
8	54	46
9	54	46
10	53	47
11	53	47
12	52	48
13	52	48
14	51	49
15	51	49
16	49	51
17	49	51
18	48	52
19	48	52
20	49	51
21	49	51
22	48	52
23	48	52
24	48	52
25	47	53
26	47	53
27	45	55
28	45	55
29	45	55
30	44	56

	Rain chance (%)
1	41
2	40
3	40
4	40
5	40
6	40
7	40
8	41
9	41
10	41
11	42
12	43
13	43
14	44
15	45
16	45
17	46
18	46
19	46
20	46
21	46
22	46
23	46
24	46
25	46
26	46
27	46
28	46
29	46
30	46

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	18	36	34	11
2	20	36	33	11
3	21	36	33	10
4	22	37	32	10
5	23	37	32	9
6	23	37	32	8
7	24	37	31	8
8	25	36	31	7
9	26	36	31	7
10	27	36	31	6
11	28	35	31	6
12	29	35	31	5
13	30	35	30	5
14	31	35	30	4
15	32	35	30	4
16	33	35	29	3
17	34	35	28	3
18	35	36	27	2
19	36	36	26	2
20	37	37	25	1
21	38	37	24	1
22	39	38	23	1
23	39	39	22	1
24	40	39	21	0
25	41	39	20	0
26	42	39	19	0
27	43	39	18	0
28	44	39	17	0
29	45	39	16	0
30	47	38	15	0