December weather forecast and climate
Tulum, Mexico

Rocks, trees, sandy beaches, and clear waters surrounding the God of Winds Temple in Tulum, Mexico
Rocks, trees, sandy beaches, and clear waters surrounding the God of Winds Temple in Tulum, Mexico
December, the first month of the winter, in Tulum, is also a warm month, with average temperature fluctuating between 29°C (84.2°F) and 18°C (64.4°F).

Temperature

The coldest months are January and December, with an average high-temperature of 29°C (84.2°F).

Rainfall

In Tulum, in December, it is raining for 7 days, with typically 92mm (3.6") of accumulated precipitation. Throughout the year, there are 106 rainfall days, and 1399mm (55.1") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 27°C (80.6°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

The month with the shortest days is December, with an average of 10.9h of daylight.

Sunshine

Months with the least sunshine in Tulum are January, September through December, with an average of 6h of sunshine.

UV index

The month with the lowest UV index in Tulum is December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 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. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What are the coldest months in Tulum?

The coldest months in Tulum, Mexico, are January and December, with an average high-temperature of 29°C (84.2°F).

What is the temperature in December in Tulum?

In Tulum, Mexico, in December, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 18°C (64.4°F).

How many days does it rain in December in Tulum?

In Tulum, Mexico, in December, during 7 rainfall days, 92mm (3.6") of precipitation is typically accumulated.

What is the water temperature in December in Tulum?

In December, the average sea temperature is 27°C (80.6°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 month with the shortest days in Tulum?

The month with the shortest days in Tulum, Mexico, is December, with an average of 10.9h of daylight.

What is the average length of the day in December in Tulum?

In December, the average length of the day in Tulum is 10.9h.

What is the month with the least sunshine in Tulum?

January, September through December, with an average of 6h of sunshine, are months with the least sunshine in Tulum, Mexico.

How long on average sun shines in December in Tulum?

The average sunshine in December in Tulum, Mexico, is 6h.

What is the month with the lowest UV index in Tulum?

The month with the lowest UV index is December, with an average maximum UV index of 7.

What is the UV index reading in December in Tulum?

In December, the average daily maximum UV index in Tulum, Mexico, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Tulum, Mexico
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are April, May, June, July and August (33°C).
Months with the lowest average high temperature are January and December (29°C).

  • Average low temperature in December: 18°C

Months with the highest average low temperature are June, July and September (23°C).
Coldest months (with the lowest average low temperature) are January, February and December (18°C).

Average rainfall in December - Tulum, Mexico
  • Average rainfall in December: 92mm

The wettest month (with the highest rainfall) is September (226mm).
The driest month (with the lowest rainfall) is March (37mm).

Average rainfall days in December - Tulum, Mexico
  • Average rainfall days in December: 7 days

The month with the highest number of rainy days is September (15 days).
The month with the lowest number of rainy days is April (3 days).

Average sea temperature in December - Tulum, Mexico
  • Average sea temperature in December: 27°C

Best months for swimming (with the highest average sea temperature) are August, September and October (29°C).
Coldest months (with the lowest average sea temperature) are January, February and March (26°C).

Average daylight in December / Average sunshine in December - Tulum, Mexico
  • Average daylight in December: 10.9h

The month with the longest days is June (Average daylight: 13.3h).
The month with shortest days is December (Average daylight: 10.9h).

  • Average sunshine in December: 6h

Months with most sunshine are March, April and May (Average sunshine: 8h).
Months with least sunshine are January, September, October, November and December (Average sunshine: 6).

Average UV index in December - Tulum, Mexico
  • Average UV index in December: 7

Months with the highest UV index are April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 7).

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