How warm is it in Cancún in July?

Daytime highs averaged 30.8 °C, night-time lows 27.0 °C. The highest value of the past 10 years was 33.1 °C (19 Jul 2025), the lowest 25.0 °C (3 Jul 2018).

How often does it rain in Cancún in July?

On average there were 16.3 rain days (at least 1 mm) with 84.7 mm of precipitation in total.

🇲🇽 Weather in Cancún in July

This is what the weather in Cancún (Mexico) was like in July in 2017–2026.

Key facts at a glance

Prevailing weather: Light rain

Avg. daytime high

30.8 °C

29.7 °C – 32.0 °C

Avg. night-time low

27.0 °C

26.2 °C – 27.9 °C

Avg. rain days in period

16.3

53 % of days · ≥ 1.0 mm

Avg. precipitation in period

84.7 mm

37.0 mm – 193 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 33.1 °C (19 Jul 2025) · Lowest temperature 25.0 °C (3 Jul 2018) · Avg. daily peak wind 11 km/h

Weather mix of all days

45Sunny
90Partly cloudy
11Cloudy
121Light rain
42Rain

Summary

On average 30.8 °C during the day and 27.0 °C at night.
On average 16.3 rain days (Rain day = at least 1.0 mm of precipitation) with 84.7 mm of precipitation in total.
Prevailing: Light rain.
Warmest year: 2025 (avg. 32.0 °C), coolest: 2020 (avg. 29.7 °C).
Wettest year: 2024 (193 mm), driest: 2019 (37.0 mm).
Extremes: 33.1 °C on 19 Jul 2025 and 25.0 °C on 3 Jul 2018.

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. max31.9°Avg. min27.1°
Rain days
17 Rain days
Precipitation
69.4 mm
Avg. sunshine per day
n/a
Sea temperature
–
Max 32.9 °C · Min 26.1 °C
2025
Avg. max32.0°Avg. min27.2°
Rain days
13 Rain days
Precipitation
46.1 mm
Avg. cloud cover
49 % cloudy
Sea temperature
–
Max 33.1 °C · Min 25.4 °C
2024
Avg. max30.0°Avg. min27.3°
Rain days
21 Rain days
Precipitation
193 mm
Avg. cloud cover
60 % cloudy
Sea temperature
–
Max 30.6 °C · Min 26.7 °C
2023
Avg. max31.3°Avg. min27.9°
Rain days
18 Rain days
Precipitation
126 mm
Avg. cloud cover
53 % cloudy
Sea temperature
–
Max 32.3 °C · Min 27.2 °C
2022
Avg. max30.9°Avg. min26.8°
Rain days
17 Rain days
Precipitation
86.0 mm
Avg. cloud cover
54 % cloudy
Sea temperature
–
Max 32.0 °C · Min 26.0 °C
2021
Avg. max30.0°Avg. min26.7°
Rain days
14 Rain days
Precipitation
54.2 mm
Avg. cloud cover
48 % cloudy
Sea temperature
–
Max 31.4 °C · Min 25.6 °C
2020
Avg. max29.7°Avg. min26.9°
Rain days
21 Rain days
Precipitation
110 mm
Avg. cloud cover
58 % cloudy
Sea temperature
–
Max 30.5 °C · Min 26.0 °C
2019
Avg. max31.8°Avg. min27.0°
Rain days
11 Rain days
Precipitation
37.0 mm
Avg. cloud cover
56 % cloudy
Sea temperature
–
Max 32.6 °C · Min 26.2 °C
2018
Avg. max29.7°Avg. min26.2°
Rain days
13 Rain days
Precipitation
66.1 mm
Avg. cloud cover
52 % cloudy
Sea temperature
–
Max 31.7 °C · Min 25.0 °C
2017
Avg. max30.3°Avg. min26.7°
Rain days
18 Rain days
Precipitation
59.8 mm
Avg. cloud cover
43 % cloudy
Sea temperature
–
Max 31.8 °C · Min 26.0 °C

Frequently asked questions

How warm is it in Cancún in July?: Daytime highs averaged 30.8 °C, night-time lows 27.0 °C. The highest value of the past 10 years was 33.1 °C (19 Jul 2025), the lowest 25.0 °C (3 Jul 2018).
How often does it rain in Cancún in July?: On average there were 16.3 rain days (at least 1 mm) with 84.7 mm of precipitation in total.

Check your exact travel dates

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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. 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)