Chetumal
Mexico
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Chetumal, Mexico

The last month of the summer, August, is also a hot month in Chetumal, Mexico, with temperature in the range of an average high of 32.8°C (91°F) and an average low of 24.3°C (75.7°F).

Temperature

August is the warmest month, with an average high-temperature of 32.8°C (91°F) and an average low-temperature of 24.3°C (75.7°F).

Heat index

In August, the average heat index is appraised at a burning hot 45.9°C (114.6°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, clothing, pregnancy), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In August, in Chetumal, the rain falls for 13.5 days. Throughout August, 143.7mm (5.7") of precipitation is accumulated. In Chetumal, during the entire year, the rain falls for 123 days and collects up to 1307.6mm (51.5") of precipitation.

Sea temperature

In Chetumal, the average water temperature is 29.3°C (84.7°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In August, the average length of the day is 12.7h.

Sunshine

In August, the average sunshine in Chetumal is 7.6h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 12 in August interpret into the following advice:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the warmest month in Chetumal?

The warmest month in Chetumal, Mexico, is August, with an average high-temperature of 32.8°C (91°F) and an average low-temperature of 24.3°C (75.7°F).

What is the temperature in August in Chetumal?

In August, in Chetumal, the average high-temperature is 32.8°C (91°F), and the average low-temperature is 24.3°C (75.7°F). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that factores the actual air temperature with the relative humidity, is evaluated at 45.9°C (114.6°F).

What is the average humidity in August in Chetumal?

In Chetumal, Mexico, the average relative humidity in August is 77%.

How much does it rain in Chetumal in August?

In Chetumal, in August, during 13.5 rainfall days, 143.7mm (5.7") of precipitation is typically accumulated.

What is the water temperature in August in Chetumal?

In Chetumal, Mexico, in August, the average water temperature is 29.3°C (84.7°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in August in Chetumal?

The average length of the day in August in Chetumal, Mexico, is 12.7h.

How many hours of sunshine does Chetumal have in August?

The average sunshine in August is 7.6h.

What are the months with the highest UV index in Chetumal?

Months with the highest UV index in Chetumal are March through September, with an average maximum UV index of 12.

What is the UV index reading in August in Chetumal?

The average daily maximum UV index in August in Chetumal, Mexico, is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to the Sun's UV rays.
Average temperature in August - Chetumal, Mexico
  • Average high temperature in August: 32.8°C

The warmest month (with the highest average high temperature) is August (32.8°C).
The month with the lowest average high temperature is January (28.5°C).

  • Average low temperature in August: 24.3°C

The month with the highest average low temperature is June (25°C).
The coldest month (with the lowest average low temperature) is January (18.3°C).

Average humidity in August - Chetumal, Mexico
  • Average humidity in August: 77%

Months with the highest relative humidity are January, October, November and December (80%).
The month with the lowest relative humidity is April (73%).

Average rainfall in August - Chetumal, Mexico
  • Average rainfall in August: 143.7mm

The wettest month (with the highest rainfall) is September (206.8mm).
The driest month (with the lowest rainfall) is March (26.4mm).

Average rainfall days in August - Chetumal, Mexico
  • Average rainfall days in August: 13.5 days

The month with the highest number of rainy days is September (15.8 days).
Months with the lowest number of rainy days are March and April (3.8 days).

Average sea temperature in August - Chetumal, Mexico
  • Average sea temperature in August: 29.3°C

The best month for swimming (with the highest average sea temperature) is September (29.7°C).
The coldest month (with the lowest average sea temperature) is January (26.2°C).

Average daylight in August / Average sunshine in August - Chetumal, Mexico
  • Average daylight in August: 12.7h

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11h).

  • Average sunshine in August: 7.6h

The month with most sunshine is April (Average sunshine: 9.1h).
The month with least sunshine is December (Average sunshine: 6.6h).

Average UV index in August - Chetumal, Mexico
  • Average UV index in August: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January, November and December (UV index 8).