Ermua weather in January

In January, Ermua sees average daytime highs of 11°C and overnight lows near 6°C, with 124 mm of precipitation across 15.3 wet days and about 9.2 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 11°C through the month. The sky is clear or mostly clear about 19% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 54 min at the start of January to 9 h 36 min by month's end. Set against the rest of the year, January is Ermua's 12th-clearest and 2nd-windiest month. For the whole year in context, see Ermua's year-round climate.

Daytime high
11°
12th warmest
Overnight low
2nd coldest
Precipitation
124 mm
15.3 wet days
Daylight
9 h 06 min
8:45 AM – 5:53 PM
Cloud cover
69%
12th clearest
Wind
14 km/h
2nd windiest
Solar energy
1.58 kWh/m²
Travel score
2.4
out of 10

Ermua is capital of Ermua Municipality, Spain.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 11°C through the month.

A typical January day in Ermua reaches about 11°C in the afternoon and slips back to 6°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 15°C. Set against its neighbours, January runs on par with December and on par with February.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1117
2117
3117
4117
5117
6117
7117
8117
9117
10117
11117
12117
13117
14116
15116
16116
17116
18116
19116
20116
21116
22116
23116
24116
25116
26116
27116
28116
29116
30116
31116

Ermua weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 12415.30.89.22.4
Feb11° / 11013.71.410.22.6
Mar13° / 10513.30.511.63.5
Apr15° / 10915.30.113.13.8
May17° / 12°9314.3014.45.0
Jun20° / 14°7311.7015.16.0
Jul22° / 16°6610.8014.96.6
Aug23° / 17°6511.1013.86.8
Sep21° / 15°7511.6012.36.2
Oct18° / 13°11013.6010.85.4
Nov14° / 15715.80.19.53.5
Dec12° / 12414.50.58.92.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23367
33367
43367
53268
63367
73367
83367
93367
103268
113169
123169
133169
143169
153070
163070
172971
182971
192872
202872
212971
222971
232971
242971
252971
262971
272971
282971
293070
303169
313169

Chance of precipitation in January

Any precipitationSnow

Ermua gets around 124 mm of rain and snow over 15.3 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 49% and peaks near 54% on the wettest days, and about 1 day brings snow. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1452
2452
3462
4462
5462
6463
7463
8463
9463
10463
11463
12473
13473
14473
15483
16493
17493
18503
19503
20513
21513
22523
23533
24533
25533
26543
27543
28533
29534
30534
31534

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 14 km/h in January.

Across January, 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
115light breeze
215light breeze
315light 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
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 54 min at the start of January to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over January. Sunrise moves from 8:48 AM to 8:35 AM, and sunset from 5:39 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.98:485:39
28.98:485:40
38.98:485:40
48.98:485:41
58.98:485:42
68.98:485:43
78.98:485:44
89.08:475:45
99.08:475:46
109.08:475:47
119.08:475:48
129.08:475:49
139.18:465:50
149.18:465:51
159.18:465:52
169.18:455:53
179.28:455:55
189.28:445:56
199.28:445:57
209.28:435:58
219.38:435:59
229.38:426:00
239.38:416:02
249.48:416:03
259.48:406:04
269.48:396:05
279.58:386:07
289.58:376:08
299.58:376:09
309.68:366:11
319.68:356:12

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.58 kWh/m².

For context, solar energy here swings from a low near 1.39 kWh/m² to a high of 5.86 kWh/m² in June across the year — January's 1.58 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.4Dim
21.4Dim
31.4Dim
41.5Dim
51.5Dim
61.5Dim
71.5Dim
81.5Dim
91.5Dim
101.5Dim
111.5Dim
121.5Dim
131.6Dim
141.6Dim
151.6Dim
161.6Dim
171.6Dim
181.6Dim
191.6Dim
201.6Dim
211.6Dim
221.6Dim
231.7Dim
241.7Dim
251.7Dim
261.7Dim
271.8Dim
281.8Dim
291.8Dim
301.9Dim
311.9Dim
Planning a trip in January

Is January a good time to visit Ermua?

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

2.4
Sightseeing
12th-best month of the year
0.0
Beach & pool
9th-best month of the year

January is a weaker month for outdoor sightseeing in Ermua.

What to pack for Ermua in January

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

In January, Ermua sees daytime highs around 11°C and nights near 6°C. Pack a warm layer and rain gear. About 15 days see rain.

a warm layerrain gear

Sea temperature near Ermua in January

The nearest coast averages about 13°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 23 km away) is warmest in August at about 22°C and coldest in February near 12°C.

It's comfortable for a long swim from Jul 3 to Sep 25 — about 2.8 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar13Bracing
Apr14Bracing
May16Cool
Jun19Cool
Jul21Refreshing
Aug22Refreshing
Sep21Refreshing
Oct18Cool
Nov16Cool
Dec14Bracing

UV index in Ermua in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ermua peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 15UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb2Low
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Ermua?

Ermua sits at 43.2°N, 2.5°W, 181 m above sea level, in Spain. The nearest listed city is Eibar, 3.0 km away.

Topography around Ermua

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

Within 3 km, the terrain around Ermua has large variations in elevation — a maximum elevation change of 661 m around an average of 352 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,295 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,497 m.

The land around Ermua is covered by trees (73%) within 3 km, trees (76%) and grassland (21%) within 16 km, and trees (44%) and water (27%) within 80 km.

3 km
661 m
16 km
1,295 m
80 km
1,497 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Eibar 3.0 km · Durango 11 km · Arrasate / Mondragón 14 km · Amorebieta 19 km · Gernika-Lumo 21 km · Galdakao 28 km · Zarautz 29 km · Bermeo 31 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 Ermua (43.1872°, -2.5026°, elevation 181 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).