Bermeo weather in May

In May, Bermeo sees average daytime highs of 16°C and overnight lows near 14°C, with 70 mm of rain across 12.3 wet days and about 14.5 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 17°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 15 hours by month's end. Set against the rest of the year, May is Bermeo's 5th-clearest and 8th-windiest month. For the whole year in context, see Bermeo's year-round climate.

Daytime high: 16°; 6th warmest
Overnight low: 14°; 7th coldest
Rainfall: 70 mm; 12.3 wet days
Daylight: 14 h 30 min; 5:52 AM – 8:22 PM
Cloud cover: 60%; 5th clearest
Wind: 17 km/h; 8th windiest
Solar energy: 5.78 kWh/m²
Travel score: 4.7; out of 10

← April Bermeo year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 17°C by the end.

A typical May day in Bermeo reaches about 16°C in the afternoon and slips back to 14°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 19°C. Set against its neighbours, May runs about 2°C warmer than April and about 3°C cooler than June.

	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	31
Avg high (°C)	15	15	15	15	15	15	15	15	15	15	15	15	16	16	16	16	16	16	16	16	16	16	16	17	17	17	17	17	17	17	17
Avg low (°C)	12	13	13	13	13	13	13	13	13	13	13	13	13	14	14	14	14	14	14	14	14	14	14	15	15	15	15	15	15	15	15

	Avg high (°C)	Avg low (°C)
1	15	12
2	15	13
3	15	13
4	15	13
5	15	13
6	15	13
7	15	13
8	15	13
9	15	13
10	15	13
11	15	13
12	15	13
13	16	13
14	16	14
15	16	14
16	16	14
17	16	14
18	16	14
19	16	14
20	16	14
21	16	14
22	16	14
23	16	14
24	17	15
25	17	15
26	17	15
27	17	15
28	17	15
29	17	15
30	17	15
31	17	15

Bermeo weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	12° / 10°	141	15.8	9.1	2.8
Feb	12° / 9°	124	14.4	10.2	2.6
Mar	13° / 10°	110	13.4	11.6	3.2
Apr	14° / 11°	95	13.9	13.2	3.6
May	16° / 14°	70	12.3	14.5	4.7
Jun	18° / 17°	57	10.2	15.2	6.0
Jul	20° / 19°	51	9.5	14.9	6.7
Aug	21° / 20°	55	10.1	13.8	6.8
Sep	20° / 18°	74	11.4	12.3	6.2
Oct	18° / 16°	113	14	10.8	5.4
Nov	15° / 13°	180	16.9	9.5	3.8
Dec	13° / 11°	141	15.7	8.8	3.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to open up as the month goes on.

	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	31
Clearer (%)	40	40	40	40	40	39	40	40	40	40	41	41	41	42	43	43	44	44	46	46	48	49	49	49	49	50	49	49	49	48	49
Cloudier (%)	60	60	60	60	60	61	60	60	60	60	59	59	59	58	57	57	56	56	54	54	52	51	51	51	51	50	51	51	51	52	51

	Clearer (%)	Cloudier (%)
1	40	60
2	40	60
3	40	60
4	40	60
5	40	60
6	39	61
7	40	60
8	40	60
9	40	60
10	40	60
11	41	59
12	41	59
13	41	59
14	42	58
15	43	57
16	43	57
17	44	56
18	44	56
19	46	54
20	46	54
21	48	52
22	49	51
23	49	51
24	49	51
25	49	51
26	50	50
27	49	51
28	49	51
29	49	51
30	48	52
31	49	51

Chance of precipitation in May

Any precipitation

Bermeo gets around 70 mm of rain over 12.3 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

	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	31
Rain chance (%)	46	45	45	45	45	44	44	44	43	43	42	42	42	41	41	40	40	40	39	39	38	38	37	37	37	37	37	37	37	38	38

	Rain chance (%)
1	46
2	45
3	45
4	45
5	45
6	44
7	44
8	44
9	43
10	43
11	42
12	42
13	42
14	41
15	41
16	40
17	40
18	40
19	39
20	39
21	38
22	38
23	37
24	37
25	37
26	37
27	37
28	37
29	37
30	38
31	38

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 69% 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	31
Dry (%)	89	88	87	86	85	83	82	81	80	79	78	77	76	74	73	71	69	68	67	65	63	61	58	56	54	52	50	49	47	46	46
Comfortable (%)	11	12	13	14	15	17	18	19	20	21	22	23	24	26	27	28	30	31	32	33	35	36	38	39	41	42	43	43	44	44	44
Humid (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	2	2	3	4	5	5	6	7	8	9	10	11

	Dry (%)	Comfortable (%)	Humid (%)
1	89	11	0
2	88	12	0
3	87	13	0
4	86	14	0
5	85	15	0
6	83	17	0
7	82	18	0
8	81	19	0
9	80	20	0
10	79	21	0
11	78	22	0
12	77	23	0
13	76	24	0
14	74	26	0
15	73	27	0
16	71	28	1
17	69	30	1
18	68	31	1
19	67	32	1
20	65	33	2
21	63	35	2
22	61	36	3
23	58	38	4
24	56	39	5
25	54	41	5
26	52	42	6
27	50	43	7
28	49	43	8
29	47	44	9
30	46	44	10
31	46	44	11

Wind in May

Winds average 17 km/h in May.

Across May, daily wind ranges from about 16 km/h on the calmest days to 18 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	31
Wind speed (km/h)	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	17	16	16	16	16	16	16	16	16	16	16	16	16	16	16
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	18	light breeze
2	18	light breeze
3	18	light breeze
4	18	light breeze
5	18	light breeze
6	18	light breeze
7	18	light breeze
8	17	light breeze
9	17	light breeze
10	17	light breeze
11	17	light breeze
12	17	light breeze
13	17	light breeze
14	17	light breeze
15	17	light breeze
16	17	light breeze
17	17	light breeze
18	16	light breeze
19	16	light breeze
20	16	light breeze
21	16	light breeze
22	16	light breeze
23	16	light breeze
24	16	light breeze
25	16	light breeze
26	16	light breeze
27	16	light breeze
28	16	light breeze
29	16	light breeze
30	16	light breeze
31	16	light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 6:11 AM to 5:40 AM, and sunset from 8:05 PM to 8:37 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	31
Daylight (h)	13.9	13.9	14.0	14.0	14.1	14.1	14.1	14.2	14.2	14.3	14.3	14.3	14.4	14.4	14.5	14.5	14.5	14.6	14.6	14.6	14.7	14.7	14.7	14.8	14.8	14.8	14.8	14.9	14.9	14.9	15.0
Sunrise (AM)	6:11	6:10	6:09	6:07	6:06	6:04	6:03	6:02	6:00	5:59	5:58	5:57	5:56	5:55	5:53	5:52	5:51	5:50	5:49	5:48	5:47	5:46	5:46	5:45	5:44	5:43	5:42	5:42	5:41	5:40	5:40
Sunset (PM)	8:05	8:06	8:07	8:08	8:09	8:11	8:12	8:13	8:14	8:15	8:16	8:18	8:19	8:20	8:21	8:22	8:23	8:24	8:25	8:26	8:27	8:28	8:29	8:30	8:31	8:32	8:33	8:34	8:35	8:36	8:37

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.9	6:11	8:05
2	13.9	6:10	8:06
3	14.0	6:09	8:07
4	14.0	6:07	8:08
5	14.1	6:06	8:09
6	14.1	6:04	8:11
7	14.1	6:03	8:12
8	14.2	6:02	8:13
9	14.2	6:00	8:14
10	14.3	5:59	8:15
11	14.3	5:58	8:16
12	14.3	5:57	8:18
13	14.4	5:56	8:19
14	14.4	5:55	8:20
15	14.5	5:53	8:21
16	14.5	5:52	8:22
17	14.5	5:51	8:23
18	14.6	5:50	8:24
19	14.6	5:49	8:25
20	14.6	5:48	8:26
21	14.7	5:47	8:27
22	14.7	5:46	8:28
23	14.7	5:46	8:29
24	14.8	5:45	8:30
25	14.8	5:44	8:31
26	14.8	5:43	8:32
27	14.8	5:42	8:33
28	14.9	5:42	8:34
29	14.9	5:41	8:35
30	14.9	5:40	8:36
31	15.0	5:40	8:37

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.78 kWh/m².

For context, solar energy here swings from a low near 1.39 kWh/m² to a high of 6.15 kWh/m² in June across the year — May's 5.78 kWh/m² sits near the top of that range.

	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	31
Solar energy (kWh/m²)	5.3	5.3	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.7	5.7	5.7	5.8	5.8	5.8	5.9	5.9	5.9	5.9	6.0	6.0	6.0	6.0	6.0	6.0	6.0	6.0	6.0
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	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.3	Bright
2	5.3	Bright
3	5.4	Bright
4	5.4	Bright
5	5.4	Bright
6	5.5	Bright
7	5.5	Bright
8	5.5	Bright
9	5.5	Bright
10	5.6	Bright
11	5.6	Bright
12	5.6	Bright
13	5.7	Bright
14	5.7	Bright
15	5.7	Bright
16	5.8	Bright
17	5.8	Bright
18	5.8	Bright
19	5.9	Bright
20	5.9	Bright
21	5.9	Bright
22	5.9	Bright
23	6.0	Bright
24	6.0	Bright
25	6.0	Bright
26	6.0	Intense
27	6.0	Intense
28	6.0	Intense
29	6.0	Intense
30	6.0	Intense
31	6.0	Intense

Planning a trip in May

Is May a good time to visit Bermeo?

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

4.7

Sightseeing

6th-best month of the year

0.6

Beach & pool

6th-best month of the year

May is a reasonable time to visit Bermeo for sightseeing.

What to pack for Bermeo in May

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

In May, Bermeo sees daytime highs around 16°C and nights near 14°C. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

Sea temperature near Bermeo in May

The nearest coast averages about 15°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 24 km away) is warmest in August at about 22°C and coldest in February near 13°C.

It's comfortable for a long swim from Jul 7 to Sep 24 — about 2.6 months when the water holds above 20°C.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	13	13	13	13	15	18	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	13	Bracing
Mar	13	Bracing
Apr	13	Bracing
May	15	Cool
Jun	18	Cool
Jul	21	Refreshing
Aug	22	Refreshing
Sep	21	Refreshing
Oct	18	Cool
Nov	16	Cool
Dec	14	Bracing

UV index in Bermeo in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Bermeo peaks around July 17 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)	1	2	5	6	6	8	8	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	1	Low
Feb	2	Low
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

Location & terrain

Where is Bermeo?

Bermeo sits at 43.4°N, 2.7°W, 29 m above sea level, in Spain. The nearest listed city is Gernika-Lumo, 12 km away.

Topography around Bermeo

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

Within 3 km, the terrain around Bermeo has significant variations in elevation — a maximum elevation change of 394 m around an average of 70 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 675 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,596 m.

The land around Bermeo is covered by water (47%) and trees (38%) within 3 km, water (52%) and trees (37%) within 16 km, and trees (41%) and water (37%) within 80 km.

3 km

394 m

water 47%

16 km

675 m

water 52%

80 km

1,596 m

trees 41%

treesgrasslandcroplandartificial surfaceswater

← April Bermeo year-round climate June →Best places to visit in May

May weather nearby: Gernika-Lumo 12 km · Mungia 12 km · Amorebieta 23 km · Galdakao 23 km · Leioa 24 km · Bilbao 24 km · Basauri 24 km · Erandio 24 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 Bermeo (43.4209°, -2.7215°, elevation 29 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	15	12
2	15	13
3	15	13
4	15	13
5	15	13
6	15	13
7	15	13
8	15	13
9	15	13
10	15	13
11	15	13
12	15	13
13	16	13
14	16	14
15	16	14
16	16	14
17	16	14
18	16	14
19	16	14
20	16	14
21	16	14
22	16	14
23	16	14
24	17	15
25	17	15
26	17	15
27	17	15
28	17	15
29	17	15
30	17	15
31	17	15

	Clearer (%)	Cloudier (%)
1	40	60
2	40	60
3	40	60
4	40	60
5	40	60
6	39	61
7	40	60
8	40	60
9	40	60
10	40	60
11	41	59
12	41	59
13	41	59
14	42	58
15	43	57
16	43	57
17	44	56
18	44	56
19	46	54
20	46	54
21	48	52
22	49	51
23	49	51
24	49	51
25	49	51
26	50	50
27	49	51
28	49	51
29	49	51
30	48	52
31	49	51

	Rain chance (%)
1	46
2	45
3	45
4	45
5	45
6	44
7	44
8	44
9	43
10	43
11	42
12	42
13	42
14	41
15	41
16	40
17	40
18	40
19	39
20	39
21	38
22	38
23	37
24	37
25	37
26	37
27	37
28	37
29	37
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)
1	89	11	0
2	88	12	0
3	87	13	0
4	86	14	0
5	85	15	0
6	83	17	0
7	82	18	0
8	81	19	0
9	80	20	0
10	79	21	0
11	78	22	0
12	77	23	0
13	76	24	0
14	74	26	0
15	73	27	0
16	71	28	1
17	69	30	1
18	68	31	1
19	67	32	1
20	65	33	2
21	63	35	2
22	61	36	3
23	58	38	4
24	56	39	5
25	54	41	5
26	52	42	6
27	50	43	7
28	49	43	8
29	47	44	9
30	46	44	10
31	46	44	11

	Avg high (°C)	Avg low (°C)
1	15	12
2	15	13
3	15	13
4	15	13
5	15	13
6	15	13
7	15	13
8	15	13
9	15	13
10	15	13
11	15	13
12	15	13
13	16	13
14	16	14
15	16	14
16	16	14
17	16	14
18	16	14
19	16	14
20	16	14
21	16	14
22	16	14
23	16	14
24	17	15
25	17	15
26	17	15
27	17	15
28	17	15
29	17	15
30	17	15
31	17	15

	Clearer (%)	Cloudier (%)
1	40	60
2	40	60
3	40	60
4	40	60
5	40	60
6	39	61
7	40	60
8	40	60
9	40	60
10	40	60
11	41	59
12	41	59
13	41	59
14	42	58
15	43	57
16	43	57
17	44	56
18	44	56
19	46	54
20	46	54
21	48	52
22	49	51
23	49	51
24	49	51
25	49	51
26	50	50
27	49	51
28	49	51
29	49	51
30	48	52
31	49	51

	Rain chance (%)
1	46
2	45
3	45
4	45
5	45
6	44
7	44
8	44
9	43
10	43
11	42
12	42
13	42
14	41
15	41
16	40
17	40
18	40
19	39
20	39
21	38
22	38
23	37
24	37
25	37
26	37
27	37
28	37
29	37
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)
1	89	11	0
2	88	12	0
3	87	13	0
4	86	14	0
5	85	15	0
6	83	17	0
7	82	18	0
8	81	19	0
9	80	20	0
10	79	21	0
11	78	22	0
12	77	23	0
13	76	24	0
14	74	26	0
15	73	27	0
16	71	28	1
17	69	30	1
18	68	31	1
19	67	32	1
20	65	33	2
21	63	35	2
22	61	36	3
23	58	38	4
24	56	39	5
25	54	41	5
26	52	42	6
27	50	43	7
28	49	43	8
29	47	44	9
30	46	44	10
31	46	44	11

	Avg high (°C)	Avg low (°C)
1	15	12
2	15	13
3	15	13
4	15	13
5	15	13
6	15	13
7	15	13
8	15	13
9	15	13
10	15	13
11	15	13
12	15	13
13	16	13
14	16	14
15	16	14
16	16	14
17	16	14
18	16	14
19	16	14
20	16	14
21	16	14
22	16	14
23	16	14
24	17	15
25	17	15
26	17	15
27	17	15
28	17	15
29	17	15
30	17	15
31	17	15

	Clearer (%)	Cloudier (%)
1	40	60
2	40	60
3	40	60
4	40	60
5	40	60
6	39	61
7	40	60
8	40	60
9	40	60
10	40	60
11	41	59
12	41	59
13	41	59
14	42	58
15	43	57
16	43	57
17	44	56
18	44	56
19	46	54
20	46	54
21	48	52
22	49	51
23	49	51
24	49	51
25	49	51
26	50	50
27	49	51
28	49	51
29	49	51
30	48	52
31	49	51

	Rain chance (%)
1	46
2	45
3	45
4	45
5	45
6	44
7	44
8	44
9	43
10	43
11	42
12	42
13	42
14	41
15	41
16	40
17	40
18	40
19	39
20	39
21	38
22	38
23	37
24	37
25	37
26	37
27	37
28	37
29	37
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)
1	89	11	0
2	88	12	0
3	87	13	0
4	86	14	0
5	85	15	0
6	83	17	0
7	82	18	0
8	81	19	0
9	80	20	0
10	79	21	0
11	78	22	0
12	77	23	0
13	76	24	0
14	74	26	0
15	73	27	0
16	71	28	1
17	69	30	1
18	68	31	1
19	67	32	1
20	65	33	2
21	63	35	2
22	61	36	3
23	58	38	4
24	56	39	5
25	54	41	5
26	52	42	6
27	50	43	7
28	49	43	8
29	47	44	9
30	46	44	10
31	46	44	11