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San Sebastian de la Gomera weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit San Sebastian de la Gomera?
For a warm holiday, the best week has been 7–13 September (Weather Index 100). Favourable start dates for a 7-day trip run from 17 June to 16 October. August and September are warmest (24°C), July is driest and May, June and July have the most sun.
- Warmest
- August and September 24°C
- Coolest
- January to April 19°C
- Driest
- July less than 1% rain-day chance
- Wettest
- November 13% rain-day chance
- Sunniest
- May, June and July 13 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in San Sebastian de la Gomera
San Sebastian de la Gomera historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 19.1 | 18.0 | 3.9 | 1.2 | 8.1 | 10.0 |
| February | 18.9 | 17.7 | 6.8 | 1.9 | 11.6 | 10.8 |
| March | 18.8 | 17.6 | 7.4 | 2.3 | 8.4 | 11.4 |
| April | 19.3 | 18.2 | 4.0 | 1.2 | 7.1 | 12.1 |
| May | 20.1 | 19.0 | 2.9 | 0.9 | 2.7 | 13.0 |
| June | 21.4 | 20.4 | 2.0 | 0.6 | 3.6 | 13.4 |
| July | 23.2 | 22.0 | 0.3 | 0.1 | 0.4 | 13.1 |
| August | 24.2 | 22.9 | 1.0 | 0.3 | 1.2 | 12.4 |
| September | 23.5 | 22.3 | 4.3 | 1.3 | 10.4 | 11.7 |
| October | 23.1 | 21.9 | 5.5 | 1.7 | 9.8 | 10.8 |
| November | 21.7 | 20.5 | 13.0 | 3.9 | 16.2 | 9.8 |
| December | 20.2 | 19.0 | 9.0 | 2.8 | 14.9 | 9.8 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.