🇵🇹 Weather in Lagos in September
This is what the weather in Lagos (Algarve, Portugal) was like in September in 2017–2026.
Key facts at a glance
Avg. daytime high
23.7 °C
22.5 °C – 26.2 °C
Avg. night-time low
18.9 °C
17.4 °C – 20.5 °C
Avg. rain days in period
2.7
9 % of days · ≥ 1.0 mm
Avg. precipitation in period
19.5 mm
0.0 mm – 54.1 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 31.2 °C (7 Sep 2026) · Lowest temperature 14.7 °C (23 Sep 2025) · Avg. daily peak wind 24 km/h
Weather mix of all days
- 175Sunny
- 66Partly cloudy
- 2Cloudy
- 17Light rain
- 10Rain
Summary
- On average 23.7 °C during the day and 18.9 °C at night.
- On average 2.7 rain days (Rain day = at least 1.0 mm of precipitation) with 19.5 mm of precipitation in total.
- In 2 of 10 years there was not a single rain day.
- Prevailing: Sunny.
- Warmest year: 2026 (avg. 26.2 °C), coolest: 2024 (avg. 22.5 °C).
- Wettest year: 2022 (54.1 mm), driest: 2017 (0.0 mm).
- Extremes: 31.2 °C on 7 Sep 2026 and 14.7 °C on 23 Sep 2025.
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. max26.2°Avg. min20.5°- Rain days
- 0 Rain days
- Precipitation
- 0.8 mm
- Avg. sunshine per day
- n/a
- Sea temperature
- –
Max 31.2 °C · Min 17.7 °C
2025
Avg. max23.4°Avg. min17.9°- Rain days
- 1 Rain days
- Precipitation
- 3.0 mm
- Avg. cloud cover
- 24 % cloudy
- Sea temperature
- –
Max 27.2 °C · Min 14.7 °C
2024
Avg. max22.5°Avg. min17.8°- Rain days
- 2 Rain days
- Precipitation
- 9.9 mm
- Avg. cloud cover
- 25 % cloudy
- Sea temperature
- –
Max 26.8 °C · Min 15.1 °C
2023
Avg. max23.0°Avg. min19.2°- Rain days
- 6 Rain days
- Precipitation
- 26.6 mm
- Avg. cloud cover
- 28 % cloudy
- Sea temperature
- –
Max 27.4 °C · Min 16.4 °C
2022
Avg. max22.6°Avg. min18.8°- Rain days
- 7 Rain days
- Precipitation
- 54.1 mm
- Avg. cloud cover
- 28 % cloudy
- Sea temperature
- –
Max 25.7 °C · Min 16.0 °C
2021
Avg. max23.0°Avg. min18.9°- Rain days
- 5 Rain days
- Precipitation
- 48.1 mm
- Avg. cloud cover
- 26 % cloudy
- Sea temperature
- –
Max 25.3 °C · Min 16.1 °C
2020
Avg. max23.5°Avg. min18.9°- Rain days
- 3 Rain days
- Precipitation
- 39.3 mm
- Avg. cloud cover
- 31 % cloudy
- Sea temperature
- –
Max 26.6 °C · Min 15.9 °C
2019
Avg. max23.7°Avg. min19.0°- Rain days
- 1 Rain days
- Precipitation
- 7.1 mm
- Avg. cloud cover
- 18 % cloudy
- Sea temperature
- –
Max 27.1 °C · Min 16.2 °C
2018
Avg. max25.1°Avg. min20.4°- Rain days
- 2 Rain days
- Precipitation
- 5.6 mm
- Avg. cloud cover
- 17 % cloudy
- Sea temperature
- –
Max 29.6 °C · Min 18.4 °C
2017
Avg. max23.5°Avg. min17.4°- Rain days
- 0 Rain days
- Precipitation
- 0.0 mm
- Avg. cloud cover
- 13 % cloudy
- Sea temperature
- –
Max 27.1 °C · Min 14.9 °C
Frequently asked questions
- How warm is it in Lagos in September?
- Daytime highs averaged 23.7 °C, night-time lows 18.9 °C. The highest value of the past 10 years was 31.2 °C (7 Sep 2026), the lowest 14.7 °C (23 Sep 2025).
- How often does it rain in Lagos in September?
- On average there were 2.7 rain days (at least 1 mm) with 19.5 mm of precipitation in total. In 2 of 10 years there was no rain day at all.
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)