How warm is it in Cabo San Lucas in September?

Daytime highs averaged 30.8 °C, night-time lows 26.7 °C. The highest value of the past 10 years was 35.7 °C (26 Sep 2023), the lowest 21.7 °C (18 Sep 2024).

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

On average there were 13.3 rain days (at least 1 mm) with 121 mm of precipitation in total.

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Cabo San Lucas weather in September: temperature & rain

Photo: Alexis Doine · CC0

🇲🇽 Weather in Cabo San Lucas in September

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

Key facts at a glance

Prevailing weather: Sunny

Avg. daytime high

30.8 °C

29.8 °C – 33.0 °C

Avg. night-time low

26.7 °C

25.7 °C – 28.2 °C

Avg. rain days in period

13.3

44 % of days · ≥ 1.0 mm

Avg. precipitation in period

121 mm

22.7 mm – 240 mm

Avg. cloud cover

46 %

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

Avg. sea temperature

–

Sea temperature unavailable for today (daily limit).

Extremes: Highest temperature 35.7 °C (26 Sep 2023) · Lowest temperature 21.7 °C (18 Sep 2024) · Avg. daily peak wind 19 km/h

Weather mix of all days

90Sunny
50Partly cloudy
23Cloudy
72Light rain
61Rain

Summary

On average 30.8 °C during the day and 26.7 °C at night.
On average 13.3 rain days (Rain day = at least 1.0 mm of precipitation) with 121 mm of precipitation in total.
Prevailing weather: Sunny.
Warmest year: 2023 (avg. 33.0 °C), coolest: 2017 (avg. 29.8 °C).
Wettest year: 2018 (240 mm), driest: 2023 (22.7 mm).
Extremes: 35.7 °C on 26 Sep 2023 and 21.7 °C on 18 Sep 2024.

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. max31.3°Avg. min28.2°
Rain days
26 Rain days
Precipitation
178 mm
Avg. cloud cover
–
Sea temperature
–
Max 33.2 °C · Min 27.6 °C
2025
Avg. max30.5°Avg. min27.3°
Rain days
22 Rain days
Precipitation
190 mm
Avg. cloud cover
71 % cloudy
Sea temperature
–
Max 32.6 °C · Min 26.6 °C
2024
Avg. max31.4°Avg. min25.7°
Rain days
5 Rain days
Precipitation
61.2 mm
Avg. cloud cover
47 % cloudy
Sea temperature
–
Max 34.9 °C · Min 21.7 °C
2023
Avg. max33.0°Avg. min27.9°
Rain days
5 Rain days
Precipitation
22.7 mm
Avg. cloud cover
28 % cloudy
Sea temperature
–
Max 35.7 °C · Min 26.8 °C
2022
Avg. max30.0°Avg. min25.9°
Rain days
15 Rain days
Precipitation
176 mm
Avg. cloud cover
42 % cloudy
Sea temperature
–
Max 32.0 °C · Min 24.0 °C
2021
Avg. max30.7°Avg. min26.1°
Rain days
7 Rain days
Precipitation
186 mm
Avg. cloud cover
37 % cloudy
Sea temperature
–
Max 32.5 °C · Min 24.8 °C
2020
Avg. max31.2°Avg. min26.9°
Rain days
12 Rain days
Precipitation
36.7 mm
Avg. cloud cover
37 % cloudy
Sea temperature
–
Max 33.5 °C · Min 25.7 °C
2019
Avg. max30.6°Avg. min26.1°
Rain days
9 Rain days
Precipitation
57.7 mm
Avg. cloud cover
42 % cloudy
Sea temperature
–
Max 32.5 °C · Min 24.3 °C
2018
Avg. max30.1°Avg. min26.8°
Rain days
22 Rain days
Precipitation
240 mm
Avg. cloud cover
64 % cloudy
Sea temperature
–
Max 31.8 °C · Min 25.9 °C
2017
Avg. max29.8°Avg. min25.7°
Rain days
10 Rain days
Precipitation
63.9 mm
Avg. cloud cover
47 % cloudy
Sea temperature
–
Max 31.8 °C · Min 23.4 °C

Frequently asked questions

How warm is it in Cabo San Lucas in September?: Daytime highs averaged 30.8 °C, night-time lows 26.7 °C. The highest value of the past 10 years was 35.7 °C (26 Sep 2023), the lowest 21.7 °C (18 Sep 2024).
How often does it rain in Cabo San Lucas in September?: On average there were 13.3 rain days (at least 1 mm) with 121 mm of precipitation in total.

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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)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)