How warm is it in Cabo San Lucas in May?

Daytime highs averaged 27.5 °C, night-time lows 19.7 °C. The highest value of the past 10 years was 34.3 °C (13 May 2026), the lowest 15.9 °C (6 May 2025).

How often does it rain in Cabo San Lucas in May?

On average there were 0.5 rain days (at least 1 mm) with 1.9 mm of precipitation in total. In 8 of 10 years there was no rain day at all.

How warm is the sea in Cabo San Lucas in May?

The sea temperature averaged 23.2 °C (open-sea point approx. 6 km from the town).

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Cabo San Lucas weather in May: temperature & rain

Photo: Alexis Doine · CC0

🇲🇽 Weather in Cabo San Lucas in May

This is what the weather in Cabo San Lucas (Baja California Sur, Mexico) was like in May over the years 2017–2026.

Key facts at a glance

Prevailing weather: Sunny

Avg. daytime high

27.5 °C

25.9 °C – 28.9 °C

Avg. night-time low

19.7 °C

18.7 °C – 21.2 °C

Avg. rain days in period

0.5

2 % of days · ≥ 1.0 mm

Avg. precipitation in period

1.9 mm

0.0 mm – 12.3 mm

Avg. cloud cover

31 %

This data source has no sunshine hours – average cloud cover is shown instead.

Avg. sea temperature

23.2 °C

Sea temperature available for 3 of 10 years.

Extremes: Highest temperature 34.3 °C (13 May 2026) · Lowest temperature 15.9 °C (6 May 2025) · Avg. daily peak wind 24 km/h

Weather mix of all days

174Sunny
99Partly cloudy
32Cloudy
5Light rain

Summary

On average 27.5 °C during the day and 19.7 °C at night.
On average 0.5 rain days (Rain day = at least 1.0 mm of precipitation) with 1.9 mm of precipitation in total.
In 8 of 10 years there was not a single rain day.
The sea averaged 23.2 °C.
Prevailing weather: Sunny.
Warmest year: 2024 (avg. 28.9 °C), coolest: 2019 (avg. 25.9 °C).
Wettest year: 2023 (12.3 mm), driest: 2021 (0.0 mm).
Extremes: 34.3 °C on 13 May 2026 and 15.9 °C on 6 May 2025.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max28.7°Avg. min21.2°
Rain days
0 Rain days
Precipitation
1.5 mm
Avg. cloud cover
41 % cloudy
Sea temperature
24.5 °C
Max 34.3 °C · Min 18.8 °C
2025
Avg. max27.7°Avg. min19.8°
Rain days
1 Rain days
Precipitation
4.3 mm
Avg. cloud cover
37 % cloudy
Sea temperature
22.5 °C
Max 30.7 °C · Min 15.9 °C
2024
Avg. max28.9°Avg. min20.4°
Rain days
0 Rain days
Precipitation
0.0 mm
Avg. cloud cover
32 % cloudy
Sea temperature
–
Max 33.3 °C · Min 17.2 °C
2023
Avg. max26.3°Avg. min19.1°
Rain days
4 Rain days
Precipitation
12.3 mm
Avg. cloud cover
43 % cloudy
Sea temperature
22.5 °C
Max 30.2 °C · Min 17.0 °C
2022
Avg. max27.5°Avg. min19.3°
Rain days
0 Rain days
Precipitation
0.1 mm
Avg. cloud cover
32 % cloudy
Sea temperature
–
Max 32.3 °C · Min 16.7 °C
2021
Avg. max28.1°Avg. min20.2°
Rain days
0 Rain days
Precipitation
0.0 mm
Avg. cloud cover
20 % cloudy
Sea temperature
–
Max 31.5 °C · Min 17.1 °C
2020
Avg. max26.4°Avg. min19.1°
Rain days
0 Rain days
Precipitation
0.3 mm
Avg. cloud cover
30 % cloudy
Sea temperature
–
Max 29.7 °C · Min 17.6 °C
2019
Avg. max25.9°Avg. min18.7°
Rain days
0 Rain days
Precipitation
0.4 mm
Avg. cloud cover
31 % cloudy
Sea temperature
–
Max 27.8 °C · Min 16.8 °C
2018
Avg. max28.7°Avg. min20.5°
Rain days
0 Rain days
Precipitation
0.1 mm
Avg. cloud cover
17 % cloudy
Sea temperature
–
Max 32.7 °C · Min 17.1 °C
2017
Avg. max26.6°Avg. min19.0°
Rain days
0 Rain days
Precipitation
0.0 mm
Avg. cloud cover
29 % cloudy
Sea temperature
–
Max 31.4 °C · Min 16.4 °C

Frequently asked questions

How warm is it in Cabo San Lucas in May?: Daytime highs averaged 27.5 °C, night-time lows 19.7 °C. The highest value of the past 10 years was 34.3 °C (13 May 2026), the lowest 15.9 °C (6 May 2025).
How often does it rain in Cabo San Lucas in May?: On average there were 0.5 rain days (at least 1 mm) with 1.9 mm of precipitation in total. In 8 of 10 years there was no rain day at all.
How warm is the sea in Cabo San Lucas in May?: The sea temperature averaged 23.2 °C (open-sea point approx. 6 km from the town).

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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. Snow depth is the model value for the grid cell, not the depth on the slopes. 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 measuring point approx. 6 km from the location (22.850, -109.960)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)