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

July weather forecast and climate
Chetumal, Mexico

July, like June, is another hot summer month in Chetumal, Mexico, with average temperature varying between 24.5°C (76.1°F) and 32.4°C (90.3°F).

Temperature

In Chetumal, the average high-temperature is almost the same as in June - a still tropical 32.4°C (90.3°F). In July, the average low-temperature is 24.5°C (76.1°F).

Heat index

The average heat index in July is calculated to a blistering 44.9°C (112.8°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like pregnancy, metabolic differences, differences in body mass, height, and shape, and activity influence one's weather impression. 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in July is 78%.

Rainfall

In July, in Chetumal, the rain falls for 14 days. Throughout July, 146.1mm (5.8") of precipitation is accumulated. Throughout the year, in Chetumal, there are 123 rainfall days, and 1307.6mm (51.5") of precipitation is accumulated.

Sea temperature

In Chetumal, the average water temperature is 28.9°C (84°F).
Note: 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.

Daylight

In Chetumal, Mexico, the average length of the day in July is 13.1h.

Sunshine

The average sunshine is 7.3h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Chetumal. A UV Index estimate of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 12 interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in July in Chetumal?

In Chetumal, in July, the average high-temperature is 32.4°C (90.3°F), and the average low-temperature is 24.5°C (76.1°F). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, is evaluated at 44.9°C (112.8°F).

What is the average humidity in July in Chetumal?

In July, the average relative humidity is 78%.

How much does it rain in Chetumal in July?

In Chetumal, in July, it is raining for 14 days, with typically 146.1mm (5.8") of accumulated precipitation.

What is the sea water temperature in July in Chetumal?

In July, the average sea temperature in Chetumal is 28.9°C (84°F). 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.

How many hours of daylight does Chetumal have in July?

In July, the average length of the day in Chetumal is 13.1h.

How long on average sun shines in July in Chetumal?

In Chetumal, the average sunshine in July is 7.3h.

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.

How high is the UV index in July in Chetumal?

In Chetumal, the average daily maximum UV index in July is 12. A UV Index reading of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in July - Chetumal, Mexico
  • Average high temperature in July: 32.4°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 July: 24.5°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 July - Chetumal, Mexico
  • Average humidity in July: 78%

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 July - Chetumal, Mexico
  • Average rainfall in July: 146.1mm

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 July - Chetumal, Mexico
  • Average rainfall days in July: 14 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 July - Chetumal, Mexico
  • Average sea temperature in July: 28.9°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 July / Average sunshine in July - Chetumal, Mexico
  • Average daylight in July: 13.1h

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 July: 7.3h

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 July - Chetumal, Mexico
  • Average UV index in July: 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).