🇵🇹 Weather in Lisbon in May
This is what the weather in Lisbon (Portugal) was like in May in 2017–2026.
Key facts at a glance
Avg. daytime high
19.8 °C
17.9 °C – 20.7 °C
Avg. night-time low
15.2 °C
13.6 °C – 16.1 °C
Avg. rain days in period
5.1
16 % of days · ≥ 1.0 mm
Avg. precipitation in period
22.3 mm
5.5 mm – 61.9 mm
Avg. cloud cover
50 %
This data source has no sunshine hours – average cloud cover shown instead.
Avg. sea temperature
–
Sea temperature unavailable for today (daily limit).
Extremes: Highest temperature 28.1 °C (30 May 2019) · Lowest temperature 11.6 °C (1 May 2018) · Avg. daily peak wind 27 km/h
Weather mix of all days
- 75Sunny
- 129Partly cloudy
- 55Cloudy
- 36Light rain
- 15Rain
Summary
- On average 19.8 °C during the day and 15.2 °C at night.
- On average 5.1 rain days (Rain day = at least 1.0 mm of precipitation) with 22.3 mm of precipitation in total.
- Prevailing: Partly cloudy.
- Warmest year: 2019 (avg. 20.7 °C), coolest: 2018 (avg. 17.9 °C).
- Wettest year: 2020 (61.9 mm), driest: 2024 (5.5 mm).
- Extremes: 28.1 °C on 30 May 2019 and 11.6 °C on 1 May 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. max19.7°Avg. min15.4°- Rain days
- 9 Rain days
- Precipitation
- 28.5 mm
- Avg. cloud cover
- 51 % cloudy
- Sea temperature
- –
Max 27.1 °C · Min 13.6 °C
2025
Avg. max19.7°Avg. min15.5°- Rain days
- 9 Rain days
- Precipitation
- 26.8 mm
- Avg. cloud cover
- 42 % cloudy
- Sea temperature
- –
Max 25.4 °C · Min 13.9 °C
2024
Avg. max19.2°Avg. min14.9°- Rain days
- 1 Rain days
- Precipitation
- 5.5 mm
- Avg. cloud cover
- 50 % cloudy
- Sea temperature
- –
Max 25.5 °C · Min 12.8 °C
2023
Avg. max20.4°Avg. min15.7°- Rain days
- 5 Rain days
- Precipitation
- 13.7 mm
- Avg. cloud cover
- 43 % cloudy
- Sea temperature
- –
Max 23.1 °C · Min 13.3 °C
2022
Avg. max20.5°Avg. min15.5°- Rain days
- 2 Rain days
- Precipitation
- 5.8 mm
- Avg. cloud cover
- 56 % cloudy
- Sea temperature
- –
Max 27.2 °C · Min 13.4 °C
2021
Avg. max18.8°Avg. min14.7°- Rain days
- 4 Rain days
- Precipitation
- 16.5 mm
- Avg. cloud cover
- 51 % cloudy
- Sea temperature
- –
Max 21.2 °C · Min 12.5 °C
2020
Avg. max20.5°Avg. min16.1°- Rain days
- 8 Rain days
- Precipitation
- 61.9 mm
- Avg. cloud cover
- 52 % cloudy
- Sea temperature
- –
Max 25.8 °C · Min 13.8 °C
2019
Avg. max20.7°Avg. min15.1°- Rain days
- 3 Rain days
- Precipitation
- 9.1 mm
- Avg. cloud cover
- 46 % cloudy
- Sea temperature
- –
Max 28.1 °C · Min 13.6 °C
2018
Avg. max17.9°Avg. min13.6°- Rain days
- 3 Rain days
- Precipitation
- 18.4 mm
- Avg. cloud cover
- 59 % cloudy
- Sea temperature
- –
Max 21.7 °C · Min 11.6 °C
2017
Avg. max20.5°Avg. min15.7°- Rain days
- 7 Rain days
- Precipitation
- 36.6 mm
- Avg. cloud cover
- 55 % cloudy
- Sea temperature
- –
Max 25.1 °C · Min 12.6 °C
Frequently asked questions
- How warm is it in Lisbon in May?
- Daytime highs averaged 19.8 °C, night-time lows 15.2 °C. The highest value of the past 10 years was 28.1 °C (30 May 2019), the lowest 11.6 °C (1 May 2018).
- How often does it rain in Lisbon in May?
- On average there were 5.1 rain days (at least 1 mm) with 22.3 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 May
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)