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Climate guideThirty-year normals for Ermua
Ermua climate by month
Oceanic · CfbBest Jul–Sep
Annual mean14°day and night
Seasonal swing12°warmest vs coolest
Precipitation1,488 mm151 wet days a year
43.19° N, 2.50° WElevation 181 mUTC+1 · Central European Standard Time
When to goErmua · weather score
Best timeJul–Sep
October: high / low20° / 11°
iSummary
What the weather is like
Ermua has an oceanic climate (Köppen Cfb): rain spread through the year and no real dry season.
The warmest month is August, when afternoons average 25° and nights 15°. January is the coolest month, with highs of 12° and lows of 4°. The difference between the warmest and the coolest month is about 12°.
About 1,488 mm of precipitation falls in an average year. January is the wettest month (163 mm, 17 wet days) and August the driest (81 mm, 9 wet days). Cloud cover ranges from 35% in August to 47% in December.
Compared with Madrid, the capital, Ermua is 7.6° cooler on a August afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 25° · August
- Coldest nights
- 4° · February
- Wettest month
- January
- Driest month
- August
- Clearest skies
- August · 35% cloud
- Longest day
- 15 h 22 min
- Shortest day
- 9 h 00 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 12° | 12° | 15° | 17° | 20° | 23° | 25° | 25° | 23° | 20° | 15° | 12° |
| Average low | 4° | 4° | 5° | 7° | 10° | 13° | 15° | 15° | 13° | 11° | 7° | 5° |
| Precipitation | 163 mm | 127 mm | 131 mm | 146 mm | 117 mm | 77 mm | 64 mm | 81 mm | 90 mm | 140 mm | 180 mm | 172 mm |
| Wet days (≥1 mm) | 16.8 | 13.6 | 13.8 | 13.7 | 12.3 | 9.9 | 9.3 | 9.1 | 9.7 | 12.3 | 16.2 | 13.9 |
| Cloud cover | 46% | 44% | 43% | 43% | 43% | 40% | 37% | 35% | 35% | 40% | 44% | 47% |
| Daylight | 9h 20 | 10h 32 | 11h 53 | 13h 23 | 14h 40 | 15h 22 | 15h 05 | 13h 59 | 12h 32 | 11h 05 | 9h 44 | 9h 00 |
| Month score | 27 | 33 | 46 | 55 | 66 | 72 | 75 | 75 | 75 | 67 | 43 | 30 |
ivMonth by month
Ermua in every month
January27
12° / 4°
163 mm · 16.8 wet days
February33
12° / 4°
127 mm · 13.6 wet days
March46
15° / 5°
131 mm · 13.8 wet days
April55
17° / 7°
146 mm · 13.7 wet days
May66
20° / 10°
117 mm · 12.3 wet days
June72
23° / 13°
77 mm · 9.9 wet days
July75
25° / 15°
64 mm · 9.3 wet days
August75
25° / 15°
81 mm · 9.1 wet days
September75
23° / 13°
90 mm · 9.7 wet days
October67
20° / 11°
140 mm · 12.3 wet days
November43
15° / 7°
180 mm · 16.2 wet days
December30
12° / 5°
172 mm · 13.9 wet days