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Coimbra weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Coimbra?
For a warm holiday, the best week has been 25–31 August (Weather Index 98). Favourable start dates for a 7-day trip run from 7 August to 1 September. August is warmest (29°C), August is driest and June, July and August have the most sun.
- Warmest
- August 29°C
- Coolest
- January and December 15°C
- Driest
- August 4% rain-day chance
- Wettest
- March 43% rain-day chance
- Sunniest
- June, July and August 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 Coimbra
Coimbra 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 | 14.5 | 6.3 | 32.6 | 10.1 | 108.7 | 7.0 |
| February | 16.4 | 7.4 | 29.3 | 8.2 | 79.9 | 8.2 |
| March | 17.3 | 8.4 | 42.9 | 13.3 | 115.8 | 9.5 |
| April | 19.8 | 10.3 | 38.0 | 11.4 | 110.2 | 10.8 |
| May | 22.7 | 12.5 | 26.1 | 8.1 | 58.7 | 12.2 |
| June | 25.0 | 14.8 | 21.7 | 6.5 | 28.8 | 13.1 |
| July | 28.3 | 16.2 | 5.8 | 1.8 | 6.8 | 13.4 |
| August | 28.7 | 16.2 | 4.2 | 1.3 | 4.4 | 12.5 |
| September | 26.3 | 15.0 | 18.7 | 5.6 | 43.7 | 11.0 |
| October | 23.0 | 13.5 | 36.5 | 11.3 | 125.0 | 8.7 |
| November | 17.4 | 9.7 | 42.3 | 12.7 | 134.3 | 7.1 |
| December | 15.4 | 7.7 | 37.1 | 11.5 | 108.9 | 7.0 |
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.