Bermeo weather in August

In August, Bermeo sees average daytime highs of 21°C and overnight lows near 20°C, with 55 mm of rain across 10.1 wet days and about 13.8 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 40% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Bermeo's 1st-clearest and 12th-windiest month. For the whole year in context, see Bermeo's year-round climate.

Daytime high
21°
1st warmest
Overnight low
20°
12th coldest
Rainfall
55 mm
10.1 wet days
Daylight
13 h 48 min
6:21 AM – 8:09 PM
Cloud cover
47%
1st clearest
Wind
15 km/h
12th windiest
Solar energy
5.38 kWh/m²
Travel score
6.8
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 21°C through the month.

A typical August day in Bermeo reaches about 21°C in the afternoon and slips back to 20°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 23°C. Set against its neighbours, August runs about 1°C warmer than July and about 1°C warmer than September.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
12120
22120
32120
42120
52120
62120
72120
82120
92120
102120
112120
122120
132120
142120
152120
162120
172120
182120
192120
202120
212120
222120
232120
242119
252119
262119
272119
282119
292119
302119
312119

Bermeo weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10°14115.89.12.8
Feb12° / 12414.410.22.6
Mar13° / 10°11013.411.63.2
Apr14° / 11°9513.913.23.6
May16° / 14°7012.314.54.7
Jun18° / 17°5710.215.26.0
Jul20° / 19°519.514.96.7
Aug21° / 20°5510.113.86.8
Sep20° / 18°7411.412.36.2
Oct18° / 16°1131410.85.4
Nov15° / 13°18016.99.53.8
Dec13° / 11°14115.78.83.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 25% of August, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26733
36733
46733
56733
66733
76733
86832
96832
106832
116832
126733
136733
146733
156634
166634
176634
186535
196436
206436
216337
226337
236337
246337
256238
266238
276337
286337
296238
306337
316337

Chance of precipitation in August

Any precipitation

Bermeo gets around 55 mm of rain over 10.1 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
234
334
434
534
634
733
833
932
1032
1131
1231
1330
1429
1529
1629
1729
1829
1929
2030
2130
2231
2332
2432
2533
2633
2734
2834
2935
3035
3135

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 25% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
132648212
232648212
332747212
432746213
532745213
642744223
742844223
842844223
942843223
1042843232
1142843232
1242743232
1342743242
1442743242
1542743242
1642744241
1742744241
1842644241
1942645251
2042545251
2152545251
2252544251
2362544241
2462544241
2572543241
2682643231
2782642231
2892741231
29102740221
30102839220
31112938220

Wind in August

Winds average 15 km/h in August, the calmest month.

Across August, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 24 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 6:04 AM to 6:38 AM, and sunset from 8:30 PM to 7:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.46:048:30
214.46:058:28
314.36:068:27
414.36:088:26
514.36:098:25
614.26:108:23
714.26:118:22
814.16:128:21
914.16:138:19
1014.16:148:18
1114.06:158:16
1214.06:168:15
1313.96:188:14
1413.96:198:12
1513.86:208:11
1613.86:218:09
1713.86:228:07
1813.76:238:06
1913.76:248:04
2013.66:268:03
2113.66:278:01
2213.56:287:59
2313.56:297:58
2413.46:307:56
2513.46:317:54
2613.36:327:53
2713.36:347:51
2813.26:357:49
2913.26:367:47
3013.16:377:46
3113.16:387:44

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.38 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 — August's 5.38 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.2Bright
235.2Bright
245.1Bright
255.1Bright
265.1Bright
275.0Bright
285.0Bright
295.0Bright
304.9Bright
314.9Bright
Planning a trip in August

Is August a good time to visit Bermeo?

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

6.8
Sightseeing
1st-best month of the year
4.3
Beach & pool
1st-best month of the year

August is a reasonable time to visit Bermeo for sightseeing.

What to pack for Bermeo in August

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

In August, Bermeo sees daytime highs around 21°C and nights near 20°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near Bermeo in August

The nearest coast averages about 22°C in August — 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.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb13Bracing
Mar13Bracing
Apr13Bracing
May15Cool
Jun18Cool
Jul21Refreshing
Aug22Refreshing
Sep21Refreshing
Oct18Cool
Nov16Cool
Dec14Bracing

UV index in Bermeo in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
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
16 km
675 m
80 km
1,596 m
treesgrasslandcroplandartificial surfaceswater
August 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
Roman Catholic 58%atheist 16%agnostic 11%non-believer 11%

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).