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Níkaia weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Níkaia?
For a warm holiday, the best week has been 13–19 September (Weather Index 96). Several start dates remain plausible, and the best timing varies between years. July is warmest (35°C), July and August are driest and June and July have the most sun.
- Warmest
- July 35°C
- Coolest
- January 14°C
- Driest
- July and August 5% rain-day chance
- Wettest
- January and December 26% rain-day chance
- Sunniest
- June and July 14 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 Níkaia
Níkaia 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 | 14.1 | 7.1 | 26.1 | 8.1 | 49.8 | 7.5 |
| February | 15.5 | 8.0 | 25.0 | 7.0 | 38.0 | 8.6 |
| March | 17.9 | 9.7 | 20.6 | 6.4 | 39.0 | 10.0 |
| April | 22.0 | 12.5 | 16.3 | 4.9 | 31.0 | 11.7 |
| May | 26.3 | 16.5 | 17.1 | 5.3 | 23.1 | 12.5 |
| June | 31.8 | 21.7 | 13.7 | 4.1 | 21.8 | 13.9 |
| July | 34.5 | 24.7 | 4.8 | 1.5 | 7.7 | 13.7 |
| August | 33.6 | 24.5 | 5.5 | 1.7 | 10.9 | 12.8 |
| September | 29.7 | 20.8 | 8.0 | 2.4 | 15.7 | 11.4 |
| October | 24.6 | 16.3 | 8.7 | 2.7 | 22.7 | 9.7 |
| November | 20.1 | 13.1 | 22.3 | 6.7 | 43.2 | 8.2 |
| December | 15.8 | 9.5 | 25.8 | 8.0 | 53.4 | 7.4 |
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.