May weather forecast and climate
Chetumal, Mexico

May, the last month of the spring, in Chetumal, is also a hot month, with average temperature ranging between min 24.6°C (76.3°F) and max 32.7°C (90.9°F).

Temperature

In Chetumal, the average high-temperature is 32.7°C (90.9°F), and the average low-temperature is 24.6°C (76.3°F).

Humidity

In Chetumal, Mexico, the average relative humidity is 74%.

Rainfall

In Chetumal, in May, it is raining for 8 days, with typically 128mm (5") of accumulated precipitation. Throughout the year, there are 123 rainfall days, and 1307.6mm (51.5") of precipitation is accumulated.

Sea temperature

In Chetumal, in May, the average water temperature is 28.3°C (82.9°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.

Daylight

In May, the average length of the day in Chetumal, Mexico, is 13h.

Sunshine

In May, the average sunshine is 8.9h.

UV index

Months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from the exposure to the Sun's UV radiation for the average person.
The average daily UV index of 12 in May transform into the following instructions:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 May in Chetumal?

In Chetumal, Mexico, in May, the average high-temperature is 32.7°C (90.9°F), and the average low-temperature is 24.6°C (76.3°F).

What is the average humidity in May in Chetumal?

The average relative humidity in May is 74%.

How many days does it rain in May in Chetumal?

In Chetumal, in May, it is raining for 8 days, with typically 128mm (5") of accumulated precipitation.

What is the sea water temperature in May in Chetumal?

In Chetumal, Mexico, in May, the average water temperature is 28.3°C (82.9°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 May?

The average length of the day in May in Chetumal, Mexico, is 13h.

How many hours of sunshine does Chetumal have in May?

The average sunshine in May in Chetumal, Mexico, is 8.9h.

When is the highest UV index in Chetumal?

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

What is the UV index intensity in May in Chetumal?

The average daily maximum UV index in May in Chetumal, Mexico, is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in May - Chetumal, Mexico
  • Average high temperature in May: 32.7°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 May: 24.6°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 May - Chetumal, Mexico
  • Average humidity in May: 74%

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 May - Chetumal, Mexico
  • Average rainfall in May: 128mm

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 May - Chetumal, Mexico
  • Average rainfall days in May: 8 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 May - Chetumal, Mexico
  • Average sea temperature in May: 28.3°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 May / Average sunshine in May - Chetumal, Mexico
  • Average daylight in May: 13h

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 May: 8.9h

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

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