🇬🇷 Weather in Fira in September
This is what the weather in Fira (Santorini, Greece) was like in September in 2017–2026.
Key facts at a glance
Avg. daytime high
25.7 °C
24.4 °C – 26.7 °C
Avg. night-time low
23.4 °C
22.4 °C – 24.6 °C
Avg. rain days in period
3.8
13 % of days · ≥ 1.0 mm
Avg. precipitation in period
18.0 mm
3.6 mm – 50.9 mm
Avg. sunshine per day
n/a
Sunshine duration is not available from this data source.
Avg. sea temperature
–
Sea temperature unavailable for today (daily limit).
Extremes: Highest temperature 29.5 °C (19 Sep 2017) · Lowest temperature 19.3 °C (27 Sep 2018) · Avg. daily peak wind 27 km/h
Weather mix of all days
- 209Sunny
- 29Partly cloudy
- 1Cloudy
- 30Light rain
- 8Rain
Summary
- On average 25.7 °C during the day and 23.4 °C at night.
- On average 3.8 rain days (Rain day = at least 1.0 mm of precipitation) with 18.0 mm of precipitation in total.
- Prevailing: Sunny.
- Warmest year: 2024 (avg. 26.7 °C), coolest: 2019 (avg. 24.4 °C).
- Wettest year: 2018 (50.9 mm), driest: 2021 (3.6 mm).
- Extremes: 29.5 °C on 19 Sep 2017 and 19.3 °C on 27 Sep 2018.
Overall values from all 10 years. How is this calculated?
Charts
Temperatures per year
Average over your travel period
Precipitation & rain days
Year by year
2026
Avg. max25.1°Avg. min22.9°- Rain days
- 7 Rain days
- Precipitation
- 28.6 mm
- Avg. sunshine per day
- n/a
- Sea temperature
- –
Max 27.6 °C · Min 20.6 °C
2025
Avg. max25.5°Avg. min23.2°- Rain days
- 1 Rain days
- Precipitation
- 4.7 mm
- Avg. cloud cover
- 12 % cloudy
- Sea temperature
- –
Max 28.3 °C · Min 20.6 °C
2024
Avg. max26.7°Avg. min24.6°- Rain days
- 5 Rain days
- Precipitation
- 14.8 mm
- Avg. cloud cover
- 19 % cloudy
- Sea temperature
- –
Max 29.2 °C · Min 22.4 °C
2023
Avg. max26.3°Avg. min24.0°- Rain days
- 6 Rain days
- Precipitation
- 26.1 mm
- Avg. cloud cover
- 29 % cloudy
- Sea temperature
- –
Max 28.6 °C · Min 22.2 °C
2022
Avg. max25.7°Avg. min23.3°- Rain days
- 1 Rain days
- Precipitation
- 6.3 mm
- Avg. cloud cover
- 15 % cloudy
- Sea temperature
- –
Max 29.0 °C · Min 20.1 °C
2021
Avg. max25.2°Avg. min23.0°- Rain days
- 1 Rain days
- Precipitation
- 3.6 mm
- Avg. cloud cover
- 15 % cloudy
- Sea temperature
- –
Max 28.5 °C · Min 20.2 °C
2020
Avg. max26.2°Avg. min24.0°- Rain days
- 5 Rain days
- Precipitation
- 22.5 mm
- Avg. cloud cover
- 14 % cloudy
- Sea temperature
- –
Max 28.7 °C · Min 22.3 °C
2019
Avg. max24.4°Avg. min22.4°- Rain days
- 3 Rain days
- Precipitation
- 10.4 mm
- Avg. cloud cover
- 14 % cloudy
- Sea temperature
- –
Max 25.9 °C · Min 19.9 °C
2018
Avg. max26.0°Avg. min23.4°- Rain days
- 5 Rain days
- Precipitation
- 50.9 mm
- Avg. cloud cover
- 21 % cloudy
- Sea temperature
- –
Max 28.3 °C · Min 19.3 °C
2017
Avg. max25.5°Avg. min23.0°- Rain days
- 4 Rain days
- Precipitation
- 11.9 mm
- Avg. cloud cover
- 14 % cloudy
- Sea temperature
- –
Max 29.5 °C · Min 20.3 °C
Frequently asked questions
- How warm is it in Fira in September?
- Daytime highs averaged 25.7 °C, night-time lows 23.4 °C. The highest value of the past 10 years was 29.5 °C (19 Sep 2017), the lowest 19.3 °C (27 Sep 2018).
- How often does it rain in Fira in September?
- On average there were 3.8 rain days (at least 1 mm) with 18.0 mm of precipitation in total.
Check your exact travel dates
Choose your travel period – we show the weather for exactly those days.
Other destinations in September
Data sources
- Weather data
- Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains. - Sea temperature
- MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis) - Place search
- Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)