🇲🇹 Weather in Valletta in May
This is what the weather in Valletta (Malta) was like in May in 2017–2026.
Key facts at a glance
Avg. daytime high
20.0 °C
18.2 °C – 21.0 °C
Avg. night-time low
18.4 °C
16.6 °C – 19.3 °C
Avg. rain days in period
4.7
15 % of days · ≥ 1.0 mm
Avg. precipitation in period
87.1 mm
2.0 mm – 482 mm
Avg. cloud cover
40 %
This data source has no sunshine hours – average cloud cover shown instead.
Avg. sea temperature
19.1 °C
Sea point approx. 6 km from the location
Extremes: Highest temperature 23.9 °C (24 May 2022) · Lowest temperature 14.9 °C (14 May 2019) · Avg. daily peak wind 26 km/h
Weather mix of all days
- 133Sunny
- 86Partly cloudy
- 44Cloudy
- 25Light rain
- 22Rain
Summary
- On average 20.0 °C during the day and 18.4 °C at night.
- On average 4.7 rain days (Rain day = at least 1.0 mm of precipitation) with 87.1 mm of precipitation in total.
- In 1 of 10 years there was not a single rain day.
- The sea averaged 19.1 °C.
- Prevailing: Sunny.
- Warmest year: 2025 (avg. 21.0 °C), coolest: 2019 (avg. 18.2 °C).
- Wettest year: 2023 (482 mm), driest: 2017 (2.0 mm).
- Extremes: 23.9 °C on 24 May 2022 and 14.9 °C on 14 May 2019.
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. max20.4°Avg. min18.9°- Rain days
- 5 Rain days
- Precipitation
- 61.4 mm
- Avg. cloud cover
- 34 % cloudy
- Sea temperature
- 19.5 °C
Max 23.8 °C · Min 16.5 °C
2025
Avg. max21.0°Avg. min19.3°- Rain days
- 6 Rain days
- Precipitation
- 229 mm
- Avg. cloud cover
- 37 % cloudy
- Sea temperature
- 19.9 °C
Max 22.8 °C · Min 17.9 °C
2024
Avg. max20.5°Avg. min18.8°- Rain days
- 4 Rain days
- Precipitation
- 22.4 mm
- Avg. cloud cover
- 43 % cloudy
- Sea temperature
- 19.2 °C
Max 23.1 °C · Min 16.2 °C
2023
Avg. max19.3°Avg. min18.0°- Rain days
- 13 Rain days
- Precipitation
- 482 mm
- Avg. cloud cover
- 58 % cloudy
- Sea temperature
- 18.4 °C
Max 21.9 °C · Min 17.0 °C
2022
Avg. max20.4°Avg. min18.6°- Rain days
- 5 Rain days
- Precipitation
- 22.5 mm
- Avg. cloud cover
- 28 % cloudy
- Sea temperature
- 19.1 °C
Max 23.9 °C · Min 15.8 °C
2021
Avg. max20.2°Avg. min18.4°- Rain days
- 1 Rain days
- Precipitation
- 2.2 mm
- Avg. cloud cover
- 38 % cloudy
- Sea temperature
- 18.9 °C
Max 22.5 °C · Min 16.9 °C
2020
Avg. max20.6°Avg. min19.0°- Rain days
- 2 Rain days
- Precipitation
- 6.4 mm
- Avg. cloud cover
- 39 % cloudy
- Sea temperature
- 19.6 °C
Max 22.4 °C · Min 17.0 °C
2019
Avg. max18.2°Avg. min16.6°- Rain days
- 6 Rain days
- Precipitation
- 30.8 mm
- Avg. cloud cover
- 49 % cloudy
- Sea temperature
- 17.7 °C
Max 20.3 °C · Min 14.9 °C
2018
Avg. max19.8°Avg. min18.2°- Rain days
- 5 Rain days
- Precipitation
- 13.1 mm
- Avg. cloud cover
- 39 % cloudy
- Sea temperature
- 19.2 °C
Max 23.9 °C · Min 15.9 °C
2017
Avg. max19.8°Avg. min18.5°- Rain days
- 0 Rain days
- Precipitation
- 2.0 mm
- Avg. cloud cover
- 32 % cloudy
- Sea temperature
- 19.4 °C
Max 21.9 °C · Min 16.3 °C
Frequently asked questions
- How warm is it in Valletta in May?
- Daytime highs averaged 20.0 °C, night-time lows 18.4 °C. The highest value of the past 10 years was 23.9 °C (24 May 2022), the lowest 14.9 °C (14 May 2019).
- How often does it rain in Valletta in May?
- On average there were 4.7 rain days (at least 1 mm) with 87.1 mm of precipitation in total. In 1 of 10 years there was no rain day at all.
- How warm is the sea in Valletta in May?
- The sea temperature averaged 19.1 °C (open-sea point approx. 6 km from the town).
Check your exact travel dates
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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) - Sea point approx. 6 km from the location (35.920, 14.570)
- Place search
- Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)