March weather forecast
Cozumel, Mexico

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Palm trees and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico
Palm trees and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico

Weather in March

Transitioning into March brings a noticeable increase in daylight and sunshine hours, hinting at the arrival of summer. The weather continues to heat up, and the UV index jumps to its annual peak, underscoring the importance of sunblock. An observable decrease in relative humidity indicates the onset of the dry season. Notably, the total number of rainfall decreases further from 6.5 to 4 days. March is generally warmer with a higher end temperature reaching up to 30.9°C (87.6°F).

Temperature

As Cozumel transitions from February to March, the average high-temperatures adjust to a hot 30.9°C (87.6°F), nearly the same as the previous 29.1°C (84.4°F). Cozumel observes an average nighttime low-temperature of 20.7°C (69.3°F) during the month of March.

Heat index

Throughout March, the heat index is computed to be an extremely hot 40°C (104°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

March and April, with an average relative humidity of 79%, are the least humid months.

Rainfall

The month with the least rainfall is March, when the rain falls for 4 days and typically collects 32mm (1.26") of precipitation.

Sea temperature

February and March, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater.
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

The average length of the day in March is 12h and 3min.
On the first day of the month, sunrise is at 7:06 am and sunset at 6:52 pm. On the last day of March, sunrise is at 6:41 am and sunset at 7:02 pm EST.

Sunshine

The average sunshine in March is 7.5h.

UV index

In Cozumel, the average daily maximum UV index in March is 11. A UV Index of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 11 in March leads to these guidelines:
Undertake every vital safety procedure, as unprotected skin and eyes could sustain burns in no time. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Broad-spectrum sunscreen with an SPF of 30 or above should be applied generously and reapplied every two hours and right after any outdoor activity or swim. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.

Frequently asked questions

How hot does it get in March?

Cozumel in March has an average high-temperature of 30.9°C (87.6°F) and an average low-temperature of 20.7°C (69.3°F). In March, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is computed to be 40°C (104°F).

What is the least humid month?

March and April, with an average relative humidity of 79%, are the least humid months.

What is the average humidity in March?

In Cozumel, the average relative humidity in March is 79%.

What is the driest month?

March is the month with the least rainfall. Rain falls for 4 days and accumulates 32mm (1.26") of precipitation.

How many days does it rain in March?

In Cozumel, during March, the rain falls for 4 days and regularly aggregates up to 32mm (1.26") of precipitation.

What are the months with the coldest sea water?

February and March, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater.

How warm is the water in March?

In Cozumel, the average seawater temperature in March is 26°C (78.8°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Cozumel have in March?

In Cozumel, the average day length in March is 12h and 3min.

What time are sunrise and sunset in March in Cozumel?

In March, on the first day of the month, sunrise is at 7:06 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 7:02 pm EST.

How long on average sun shines in March?

In March, the average sunshine duration in Cozumel is 7.5h.

What is the UV index intensity in March?

In Cozumel, the average daily maximum UV index in March is 11. A UV Index reading of 11, and higher, represents an extreme health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in March
Cozumel, Mexico

Average temperature in March - Cozumel, Mexico
  • Average high temperature in March: 30.9°C

The warmest month (with the highest average high temperature) is August (33°C).
The months with the lowest average high temperature are January and December (28.6°C).

  • Average low temperature in March: 20.7°C

The month with the highest average low temperature is June (23.8°C).
The coldest months (with the lowest average low temperature) are January and February (19.4°C).

Average humidity in March
Cozumel, Mexico

Average humidity in March - Cozumel, Mexico
  • Average humidity in March: 79%

The month with the highest relative humidity is September (87%).
The months with the lowest relative humidity are March and April (79%).

Average rainfall in March
Cozumel, Mexico

Average rainfall in March - Cozumel, Mexico
  • Average rainfall in March: 32.2mm

The wettest month (with the highest rainfall) is October (242.5mm).
The driest month (with the least rainfall) is March (32.2mm).

Average rainfall days in March
Cozumel, Mexico

Average rainfall days in March - Cozumel, Mexico
  • Average rainfall days in March: 4 days

The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is April (3.7 days).

Average sea temperature in March
Cozumel, Mexico

Average sea temperature in March - Cozumel, Mexico
  • Average sea temperature in March: 26°C

The best months for swimming (with the highest average sea temperature) are July, August, September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

Average daylight in March /
Average sunshine in March
Cozumel, Mexico

Average daylight in March / Average sunshine in March - Cozumel, Mexico
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in March: 7h and 3min

The month with the most sunshine is April (Average sunshine: 8h and 36min).
The months with the least sunshine are September and November (Average sunshine: 6h and 6min).

Average UV index in March
Cozumel, Mexico

Average UV index in March - Cozumel, Mexico
  • Average UV index in March: 11

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

Cozumel, Mexico

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