Irun weather in April

In April, Irun sees average daytime highs of 15°C and overnight lows near 8°C, with 127 mm of precipitation across 16.3 wet days and about 13.2 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 14°C in the first days to 16°C by the end. The sky is clear or mostly clear about 18% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 48 min by month's end. Set against the rest of the year, April is Irun's 9th-clearest and 6th-windiest month. For the whole year in context, see Irun's year-round climate.

Daytime high: 15°; 7th warmest
Overnight low: 8°; 6th coldest
Precipitation: 127 mm; 16.3 wet days
Daylight: 13 h 12 min; 6:32 AM – 7:43 PM
Cloud cover: 68%; 9th clearest
Wind: 10 km/h; 6th windiest
Solar energy: 4.66 kWh/m²
Travel score: 3.9; out of 10

Irun is capital town of the municipality of Irun, Spain.

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

← March Irun year-round climate May →Best places to visit in April

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 14°C in the first days to 16°C by the end.

A typical April day in Irun reaches about 15°C in the afternoon and slips back to 8°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 21°C. Set against its neighbours, April runs about 2°C warmer than March and about 3°C cooler than May.

	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)	14	14	14	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	16	16	16	16	16	16	16	16	16	16	16	17
Avg low (°C)	7	7	7	7	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	8	8	8	8	9	9	9	9	9	9

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

Irun weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	10° / 5°	123	14.7	1.2	9.2	2.1
Feb	11° / 5°	111	13.3	1.9	10.2	2.4
Mar	14° / 6°	107	13.9	0.9	11.6	3.6
Apr	15° / 8°	127	16.3	0.1	13.2	3.9
May	18° / 11°	124	15.3	0	14.5	5.1
Jun	21° / 14°	98	12.6	0	15.2	6.0
Jul	23° / 15°	83	12.3	0	14.9	6.5
Aug	24° / 16°	90	12.6	0	13.8	6.7
Sep	21° / 14°	96	12.7	0	12.3	6.1
Oct	18° / 11°	124	13.8	0	10.8	5.3
Nov	14° / 8°	153	15.4	0.2	9.5	3.3
Dec	11° / 5°	126	14.5	0.8	8.8	2.4

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 66%.

	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 (%)	35	35	34	34	35	34	34	34	34	34	34	35	36	36	35	35	36	35	35	35	35	34	35	34	34	33	33	33	33	32
Cloudier (%)	65	65	66	66	65	66	66	66	66	66	66	65	64	64	65	65	64	65	65	65	65	66	65	66	66	67	67	67	67	68

	Clearer (%)	Cloudier (%)
1	35	65
2	35	65
3	34	66
4	34	66
5	35	65
6	34	66
7	34	66
8	34	66
9	34	66
10	34	66
11	34	66
12	35	65
13	36	64
14	36	64
15	35	65
16	35	65
17	36	64
18	35	65
19	35	65
20	35	65
21	35	65
22	34	66
23	35	65
24	34	66
25	34	66
26	33	67
27	33	67
28	33	67
29	33	67
30	32	68

Chance of precipitation in April

Any precipitation

Irun gets around 127 mm of rain and snow over 16.3 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 54% and peaks near 56% on the wettest days, and about 0 day brings snow.

	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 (%)	51	52	52	52	52	53	53	53	53	54	54	54	54	54	54	55	55	55	55	55	55	55	56	56	56	56	56	56	56	56

	Rain chance (%)
1	51
2	52
3	52
4	52
5	52
6	53
7	53
8	53
9	53
10	54
11	54
12	54
13	54
14	54
15	54
16	55
17	55
18	55
19	55
20	55
21	55
22	55
23	56
24	56
25	56
26	56
27	56
28	56
29	56
30	56

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 99% 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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	99	99	99	99	99	99	99	98	98	98	98	97	97	96	96	95	94
Comfortable (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	2	2	2	2	3	3	4	4	5	6

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	98	2
22	98	2
23	98	2
24	98	2
25	97	3
26	97	3
27	96	4
28	96	4
29	95	5
30	94	6

Wind in April

Winds average 10 km/h in April.

Across April, daily wind ranges from about 10 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)	11	11	11	11	11	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
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	11	calm
2	11	calm
3	11	calm
4	11	calm
5	11	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	10	calm
20	10	calm
21	10	calm
22	10	calm
23	10	calm
24	10	calm
25	10	calm
26	10	calm
27	10	calm
28	10	calm
29	10	calm
30	10	calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over April. Sunrise moves from 6:59 AM to 6:09 AM, and sunset from 7:25 PM to 8:00 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)	12.4	12.5	12.5	12.6	12.6	12.7	12.7	12.8	12.8	12.9	12.9	13.0	13.0	13.1	13.1	13.2	13.2	13.3	13.3	13.4	13.4	13.5	13.5	13.6	13.6	13.7	13.7	13.8	13.8	13.8
Sunrise (AM)	6:59	6:57	6:55	6:53	6:51	6:49	6:48	6:46	6:44	6:42	6:40	6:39	6:37	6:35	6:33	6:32	6:30	6:28	6:27	6:25	6:23	6:22	6:20	6:19	6:17	6:15	6:14	6:12	6:11	6:09
Sunset (PM)	7:25	7:26	7:28	7:29	7:30	7:31	7:32	7:33	7:35	7:36	7:37	7:38	7:39	7:41	7:42	7:43	7:44	7:45	7:47	7:48	7:49	7:50	7:51	7:53	7:54	7:55	7:56	7:57	7:59	8:00

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.4	6:59	7:25
2	12.5	6:57	7:26
3	12.5	6:55	7:28
4	12.6	6:53	7:29
5	12.6	6:51	7:30
6	12.7	6:49	7:31
7	12.7	6:48	7:32
8	12.8	6:46	7:33
9	12.8	6:44	7:35
10	12.9	6:42	7:36
11	12.9	6:40	7:37
12	13.0	6:39	7:38
13	13.0	6:37	7:39
14	13.1	6:35	7:41
15	13.1	6:33	7:42
16	13.2	6:32	7:43
17	13.2	6:30	7:44
18	13.3	6:28	7:45
19	13.3	6:27	7:47
20	13.4	6:25	7:48
21	13.4	6:23	7:49
22	13.5	6:22	7:50
23	13.5	6:20	7:51
24	13.6	6:19	7:53
25	13.6	6:17	7:54
26	13.7	6:15	7:55
27	13.7	6:14	7:56
28	13.8	6:12	7:57
29	13.8	6:11	7:59
30	13.8	6:09	8:00

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.66 kWh/m².

For context, solar energy here swings from a low near 1.38 kWh/m² to a high of 5.85 kWh/m² in June across the year — April's 4.66 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)	4.2	4.3	4.3	4.3	4.4	4.4	4.4	4.5	4.5	4.5	4.5	4.6	4.6	4.6	4.7	4.7	4.7	4.8	4.8	4.8	4.8	4.9	4.9	4.9	4.9	4.9	5.0	5.0	5.0	5.0
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.2	Bright
2	4.3	Bright
3	4.3	Bright
4	4.3	Bright
5	4.4	Bright
6	4.4	Bright
7	4.4	Bright
8	4.5	Bright
9	4.5	Bright
10	4.5	Bright
11	4.5	Bright
12	4.6	Bright
13	4.6	Bright
14	4.6	Bright
15	4.7	Bright
16	4.7	Bright
17	4.7	Bright
18	4.8	Bright
19	4.8	Bright
20	4.8	Bright
21	4.8	Bright
22	4.9	Bright
23	4.9	Bright
24	4.9	Bright
25	4.9	Bright
26	4.9	Bright
27	5.0	Bright
28	5.0	Bright
29	5.0	Bright
30	5.0	Bright

Planning a trip in April

Is April a good time to visit Irun?

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

3.9

Sightseeing

7th-best month of the year

0.3

Beach & pool

7th-best month of the year

April is a weaker month for outdoor sightseeing in Irun.

What to pack for Irun in April

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

In April, Irun sees daytime highs around 15°C and nights near 8°C. Pack rain gear. Worth having: a warm layer and sun protection. About 16 days see rain.

rain geara warm layersun protection

Sea temperature near Irun in April

The nearest coast averages about 14°C in April — 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 1 to Sep 25 — about 2.9 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 Irun in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Irun 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	8	8	5	4	2	1
Level	Low	Moderate	Moderate	High	High	Very high	Very high	Very high	High	Moderate	Low	Low

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

Air quality in Irun in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Irun is worst in February — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	9	16	15	12	9	9	9	9	9	8	7	8
Level	Good	Moderate	Moderate	Good	Good	Good	Good	Good	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	9	Good
Feb	16	Moderate
Mar	15	Moderate
Apr	12	Good
May	9	Good
Jun	9	Good
Jul	9	Good
Aug	9	Good
Sep	9	Good
Oct	8	Good
Nov	7	Good
Dec	8	Good

Location & terrain

Where is Irun?

Irun sits at 43.3°N, 1.8°W, 23 m above sea level, in Spain. The nearest listed city is Hondarribia, 3.0 km away.

Topography around Irun

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

Within 3 km, the terrain around Irun has significant variations in elevation — a maximum elevation change of 342 m around an average of 53 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 883 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,044 m.

The land around Irun is covered by trees (47%) and artificial surfaces (26%) within 3 km, trees (45%) and water (36%) within 16 km, and trees (47%) and water (25%) within 80 km.

3 km

342 m

trees 47%

16 km

883 m

trees 45%

80 km

2,044 m

trees 47%

treesgrasslandcroplandartificial surfaceswaterwetland

← March Irun year-round climate May →Best places to visit in April

April weather nearby: Hondarribia 3.0 km · Errenteria 10 km · Pasaia 11 km · San Sebastian 15 km · Hernani 17 km · Lasarte 20 km · Oria 21 km · Biarritz 25 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 Irun (43.339°, -1.7894°, elevation 23 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. 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	14	7
2	14	7
3	14	7
4	15	7
5	15	7
6	15	7
7	15	7
8	15	7
9	15	7
10	15	7
11	15	7
12	15	7
13	15	8
14	15	8
15	15	8
16	15	8
17	15	8
18	15	8
19	16	8
20	16	8
21	16	8
22	16	8
23	16	8
24	16	8
25	16	9
26	16	9
27	16	9
28	16	9
29	16	9
30	17	9

	Clearer (%)	Cloudier (%)
1	35	65
2	35	65
3	34	66
4	34	66
5	35	65
6	34	66
7	34	66
8	34	66
9	34	66
10	34	66
11	34	66
12	35	65
13	36	64
14	36	64
15	35	65
16	35	65
17	36	64
18	35	65
19	35	65
20	35	65
21	35	65
22	34	66
23	35	65
24	34	66
25	34	66
26	33	67
27	33	67
28	33	67
29	33	67
30	32	68

	Rain chance (%)
1	51
2	52
3	52
4	52
5	52
6	53
7	53
8	53
9	53
10	54
11	54
12	54
13	54
14	54
15	54
16	55
17	55
18	55
19	55
20	55
21	55
22	55
23	56
24	56
25	56
26	56
27	56
28	56
29	56
30	56

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	98	2
22	98	2
23	98	2
24	98	2
25	97	3
26	97	3
27	96	4
28	96	4
29	95	5
30	94	6

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

	Clearer (%)	Cloudier (%)
1	35	65
2	35	65
3	34	66
4	34	66
5	35	65
6	34	66
7	34	66
8	34	66
9	34	66
10	34	66
11	34	66
12	35	65
13	36	64
14	36	64
15	35	65
16	35	65
17	36	64
18	35	65
19	35	65
20	35	65
21	35	65
22	34	66
23	35	65
24	34	66
25	34	66
26	33	67
27	33	67
28	33	67
29	33	67
30	32	68

	Rain chance (%)
1	51
2	52
3	52
4	52
5	52
6	53
7	53
8	53
9	53
10	54
11	54
12	54
13	54
14	54
15	54
16	55
17	55
18	55
19	55
20	55
21	55
22	55
23	56
24	56
25	56
26	56
27	56
28	56
29	56
30	56

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	98	2
22	98	2
23	98	2
24	98	2
25	97	3
26	97	3
27	96	4
28	96	4
29	95	5
30	94	6

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

	Clearer (%)	Cloudier (%)
1	35	65
2	35	65
3	34	66
4	34	66
5	35	65
6	34	66
7	34	66
8	34	66
9	34	66
10	34	66
11	34	66
12	35	65
13	36	64
14	36	64
15	35	65
16	35	65
17	36	64
18	35	65
19	35	65
20	35	65
21	35	65
22	34	66
23	35	65
24	34	66
25	34	66
26	33	67
27	33	67
28	33	67
29	33	67
30	32	68

	Rain chance (%)
1	51
2	52
3	52
4	52
5	52
6	53
7	53
8	53
9	53
10	54
11	54
12	54
13	54
14	54
15	54
16	55
17	55
18	55
19	55
20	55
21	55
22	55
23	56
24	56
25	56
26	56
27	56
28	56
29	56
30	56

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	98	2
22	98	2
23	98	2
24	98	2
25	97	3
26	97	3
27	96	4
28	96	4
29	95	5
30	94	6