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Cancun in August: Weather, Average temperature and Climate

Discover the weather for Cancun in August and if it’s a good time to travel (based on historical data).
Check flight prices to Cancun on Avionero:
August

Weather in Cancun in August 2025

OK Weather
Warm
🌧️
Rainy
✈️
$338 - $338
🌊
Very warm water
August could be a good time to visit Cancun, as the weather is generally fine. The average high temperature is around +86°F, and there are typically 0 sunny days in August. However, expect about 26 rainy days, and total monthly rainfall of approximately 123 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • August is usually the hottest month of the year in Cancun;

Average weather

☀️
+86°F
Avg. max. temperature
+72°F
Min.
+97°F
Max.
123 mm
Total precipitation
80%
Avg. humidity
2 m/s
Avg. wind
0 ☀️
Sunny Days
3 ⛅️
Cloudy
26 🌦
Rainy
Our opinion: Cancun has OK weather in August.

Average temperature in Cancun in August

Here are the expected maximum, average and minimum temperatures in Cancun for August based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in August is +88°F with a maximum of +91°F and a minimum of +79°F.

The average maximum temperature goes down 43% by the end of the month, compared with the beginning of the month, from +91°F to +86°F.

Is Cancun warm or cold in August?

Cancun is typically warm in August.

Maximum temperatures go up compared to the previous month from +84°F to +86°F. The minimum temperature also goes up from +79°F to +79°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

August is the hottest month in Cancun, here is the comparison with other months:

Water temperature in Cancun in August

Water in Cancun in August is Very warm. It varies from +83°F to +87°F, with an average of +85°F. This is almost similar to the air temperature, which averages +86°F.

The water temperature in August is one of the warmest of the entire year:

The warmest water temperatures in Cancun are reached in August, when the average sea temperature rises to +85°F. The coldest water temperatures are in January, with an average of +78°F.

Can you swim in Cancun in August?

You can definitely swim in Cancun in August, the water is very warm (+85°F in average), and might even be unpleasant for ones who like it more fresh.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Don't forget sunscreen and a hat, it's going to be hot!

Travel to Cancun

Click to see more details
✈️
3
Flights per week
$338
Min. Price
$338
Max. Price

Climate in Cancun in August

Cancun weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
Avg. temperature
+84°F+86°F+84°F
Min. temperature
+72°F+72°F+72°F
Max. temperature
+91°F+97°F+91°F
Rainfall
103 mm123 mm170 mm
Wind
2 m/s2 m/s2 m/s
Avg. water temperature
+83°F+85°F+84°F
Humidity
80%80%82%
Air pressure
1015 HPa1014 HPa1012 HPa
Sunny days
100
Cloudy days
432
Rainy days
252626
Snowy days
000

August weather is still as ok as in July. It’s getting warmer as August arrives. The average maximum temperature goes up from +84°F to +86°F during the day. Prepare for more rain. Average rainfall goes from 103 mm to 123 mm. Humidity levels don’t change as the month goes on, averaging around 80%. The average wind speed doesn’t change much during August, staying around 2 m/s. The days becoming less sunny, going from 1 sunny days in July to 0 in August.

September brings much the same weather, it remains ok.

Wind

Wind speed in Cancun in August based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Cancun is gradually increasing during August, going from 3 m/s to 4 m/s over the course of the month.

Rain

Amount of rainfall in mm during August in Cancun based on historical data.
Last Year
Historical Data
Total precipitation in August is about 198 mm, with a 52% chance of rain on a typical day. The maximum amount of rainfall per day is around 40 mm, which is moderate rain. August is a pretty wet month with over 16 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how August is compared with other months in the amount of precipitation, total mm:
Cancun wettest month is September, where a typical day has a 87% chance of precipitation and 170 mm of rainfall per day. March, on the other hand, is the driest month with a mere 45% chance of precipitation and 32 mm of rainfall per day.

How was the weather last August in Cancun?

This is the weather in Cancun in August 2023:
1 August
☁️
+91°F
2 August
☀️
+87°F
3 August
☁️
+87°F
4 August
☁️
+87°F
5 August
☁️
+87°F
6 August
☀️
+88°F
7 August
☁️
+90°F
8 August
☀️
+89°F
9 August
☀️
+91°F
10 August
☀️
+92°F
11 August
☁️
+89°F
12 August
☀️
+87°F
13 August
🌧️
+86°F
14 August
☁️
+89°F
15 August
☁️
+86°F
16 August
☁️
+87°F
17 August
☁️
+91°F
18 August
☀️
+91°F
19 August
☀️
+87°F
20 August
☁️
+85°F
21 August
🌧️
+85°F
22 August
🌧️
+85°F
23 August
☁️
+85°F
24 August
🌧️
+83°F
25 August
🌧️
+82°F
26 August
🌧️
+82°F
27 August
🌧️
+82°F
28 August
🌧️
+83°F
29 August
🌧️
+88°F
30 August
☁️
+90°F
31 August
☁️
+86°F
In August 2023 Cancun had 8 sunny days, 14 cloudy days, and 9 rainy days. The average maximum temperature was +88°F, with an absolute maximum of +91°F and a minimum of +82°F. The average humidity was 84%, with a maximum of 94% and a minimum of 74%. The average wind speed was 4 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in August?

Climate Change Over the Years

This is how Cancun climate has changed over the last 43 years.

The climate in Cancun in August has not changed that much over the last 43 years.

The average temperature was the lowest in 1984 (+80°F) and the highest in 2019 (+86°F). The driest year was 2004 with only 635 mm of rainfall, and the wettest year was 2013 with 2270 mm.

FAQ

Frequently asked questions about the weather in Cancun in August:

Is August a good time to visit Cancun?

It’s always a good time to visit Cancun, but the weather is changeable in August, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Cancun in August?

August is warm in Cancun. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in Cancun in August?

Yes, you can swim in Cancun in August, the water is very warm, with temperature averaging at +85°F, but it's important to manage hydration and sun exposure.

Is Cancun rainy in August?

Cancun is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Cancun in August?

Usually, it’s not very sunny in Cancun in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

How much does it cost to fly to Cancun in August?

The normal prices to fly to Cancun is $338 - $338. It means that the majority of our users have picked flights in this range. To find the best price we recommend you search early, using our flexible dates feature.

Other cities in Mexico

Check out the weather for other cities in Mexico.

Monthly weather in Cancun

Source of the data

For this page, we’ve looked at the typical weather in Cancun, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.