El Hierro sea temperature
The sea around El Hierro is currently about 25.0°C. It is warmest in September (around 24.1°C) and coolest in March (around 19.6°C).
That's about 1.0°C warmer than usual for this time of year.
Warm enough to swim comfortably without a wetsuit.
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Sea temperature around El Hierro — last 30 days
Over the last 14 days, the sea around El Hierro averaged 25.2°C, with daily values between 25.0°C and 25.5°C.
Show the daily values
| Day | Sea |
|---|---|
| 25 Oct | 25.0°C |
| 24 Oct | 25.0°C |
| 23 Oct | 25.0°C |
| 22 Oct | 25.0°C |
| 21 Oct | 25.0°C |
| 20 Oct | 25.0°C |
| 19 Oct | 25.5°C |
| 18 Oct | 25.5°C |
| 17 Oct | 25.5°C |
| 16 Oct | 25.5°C |
| 15 Oct | 25.0°C |
| 14 Oct | 25.5°C |
| 13 Oct | 25.5°C |
| 12 Oct | 25.5°C |
| 11 Oct | 25.5°C |
| 10 Oct | 25.5°C |
| 9 Oct | 25.5°C |
| 8 Oct | 25.5°C |
| 7 Oct | 25.5°C |
| 6 Oct | 25.5°C |
| 5 Oct | 25.5°C |
| 4 Oct | 24.5°C |
| 3 Oct | 26.0°C |
| 2 Oct | 26.0°C |
| 1 Oct | 26.0°C |
| 30 Sep | 25.0°C |
| 29 Sep | 25.0°C |
| 28 Sep | 25.0°C |
| 27 Sep | 25.0°C |
| 26 Sep | 25.5°C |
El Hierro sea temperature month by month
| Month | Sea temperature | Swimming |
|---|---|---|
| January | 20.5° | Pleasant |
| February | 19.8° | Cool |
| March | 19.6° | Cool |
| April | 20.1° | Pleasant |
| May | 20.9° | Pleasant |
| June | 21.9° | Pleasant |
| July | 22.6° | Warm |
| August | 23.4° | Warm |
| September | 24.1° | Warm |
| October | 24.0° | Warm |
| November | 22.9° | Warm |
| December | 21.6° | Pleasant |
Frequently asked questions
Can you swim in the sea in El Hierro in winter?
Yes. Even in the coolest month (March) the sea around El Hierro averages about 19.6°C — swimmable for many, especially with a short wetsuit. In summer it reaches around 24.1°C.
Which month has the warmest sea in El Hierro?
September, when the sea around El Hierro averages about 24.1°C.
Is the sea cold in El Hierro?
Not very. The sea around El Hierro stays mild all year, from about 19.6°C in March to 24.1°C in September.
How warm has the sea around El Hierro been recently?
Over the last 14 days, the sea around El Hierro averaged 25.2°C, with daily values between 25.0°C and 25.5°C.
All beaches on El Hierro · Best Canary Island for Swimming
Data source: AEMET © Agencia Estatal de Meteorología · Monthly climate averages use published, island-specific sources and reference periods. See the source list in our methodology. Last reviewed 2026-06-12.