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Genoa weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Genoa?
For a warm holiday, the best week has been 5–11 September (Weather Index 92). Favourable start dates for a 7-day trip run from 30 August to 11 September. July and August are warmest (29°C), January is driest and June and July have the most sun.
- Warmest
- July and August 29°C
- Coolest
- January 12°C
- Driest
- January 29% rain-day chance
- Wettest
- May 54% rain-day chance
- Sunniest
- 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 Genoa
Genoa 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 | 11.6 | 6.4 | 29.4 | 9.1 | 93.9 | 6.4 |
| February | 13.2 | 7.7 | 35.0 | 9.8 | 93.9 | 7.0 |
| March | 15.4 | 9.3 | 31.3 | 9.7 | 108.2 | 8.8 |
| April | 18.4 | 12.0 | 36.7 | 11.0 | 89.6 | 10.6 |
| May | 21.4 | 15.6 | 54.2 | 16.8 | 131.2 | 11.2 |
| June | 26.2 | 20.0 | 37.0 | 11.1 | 80.9 | 13.0 |
| July | 28.7 | 22.1 | 34.5 | 10.7 | 58.5 | 13.4 |
| August | 29.3 | 22.4 | 37.7 | 11.7 | 84.1 | 12.1 |
| September | 25.4 | 18.8 | 37.7 | 11.3 | 96.6 | 10.4 |
| October | 21.0 | 15.1 | 40.0 | 12.4 | 189.4 | 7.5 |
| November | 15.5 | 10.6 | 39.7 | 11.9 | 162.4 | 6.0 |
| December | 12.5 | 7.5 | 31.9 | 9.9 | 124.1 | 5.6 |
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.