May weather forecast
San José Viejo, Mexico

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Weather in May

The last month of the spring, May, is also a moderately hot month in San José Viejo, Mexico, with an average temperature varying between 27.4°C (81.3°F) and 22.4°C (72.3°F).

Temperature

May's average high-temperature stands at a still warm 27.4°C (81.3°F), showing little deviation from April's 25.7°C (78.3°F). San José Viejo's average temperature during the nights of May is recorded at a pleasant 22.4°C (72.3°F).

Heat index

The average heat index in May is calculated to be 28°C (82.4°F). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. 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 quite important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

With an average relative humidity of 57%, May is the least humid month.

Rainfall

Months with rainfall are January, February, May through December. May is the first month it rains. Throughout May, in the average 0.7 rainfall days, it receives 1mm (0.04") of precipitation. Throughout the year, there are 57.5 rainfall days, and 229mm (9.02") of precipitation is accumulated.

Daylight

The average length of the day in May is 13h and 16min.
On the first day of May, sunrise is at 5:44 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 7:00 pm MST.

Sunshine

In San José Viejo, the average sunshine in May is 11.9h.

UV index

May through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 7 in May transforms into the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. 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. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Frequently asked questions

What is the usual temperature for San José Viejo in May?

In San José Viejo, 27.4°C (81.3°F) is the average high-temperature and 22.4°C (72.3°F) is the average low-temperature during May. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in May is calculated to be 28°C (82.4°F).

What is the least humid month in San José Viejo?

May is the least humid month, with an average relative humidity of 57%.

What is the average humidity in May in San José Viejo?

In San José Viejo, the average relative humidity in May is 57%.

When does it start to rain in San José Viejo?

May is the first month it rains in San José Viejo. Throughout May, in the average 0.7 rainfall days, it receives 1mm (0.04") of precipitation.

What is the average length of the day in May in San José Viejo?

In May, the average day length in San José Viejo, Mexico, is 13h and 16min.

When is the sunrise / sunset in May in San José Viejo?

On the first day of May in San José Viejo, sunrise is at 5:44 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 7:00 pm MST.

How many hours of sunshine does San José Viejo have in May?

In San José Viejo, Mexico, the average sunshine duration in May is 11.9h.

What is the month with the highest UV index in San José Viejo?

The months with the highest UV index in San José Viejo are May through October, with an average maximum UV index of 7.

What is the UV index reading in May in San José Viejo?

The average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in May
San José Viejo, Mexico

Average temperature in May - San José Viejo, Mexico
  • Average high temperature in May: 27.4°C

The warmest month (with the highest average high temperature) is August (30.4°C).
The month with the lowest average high temperature is February (23.3°C).

  • Average low temperature in May: 22.4°C

The month with the highest average low temperature is August (26.5°C).
The coldest month (with the lowest average low temperature) is January (17.9°C).

Average pressure in May
San José Viejo, Mexico

Average pressure in May - San José Viejo, Mexico
  • Average pressure in May: 1011.3mbar

The month with the highest atmospheric pressure is January (1015.6mbar).
The month with the lowest atmospheric pressure is September (1009.5mbar).

Average wind speed in May
San José Viejo, Mexico

Average wind speed in May - San José Viejo, Mexico
  • Average wind speed in May: 8.9km/h

The windiest month (with the highest average wind speed) is January (10.7km/h).
The calmest month (with the lowest average wind speed) is October (8.4km/h).

Average humidity in May
San José Viejo, Mexico

Average humidity in May - San José Viejo, Mexico
  • Average humidity in May: 57%

The month with the highest relative humidity is September (76%).
The month with the lowest relative humidity is May (57%).

Average rainfall in May
San José Viejo, Mexico

Average rainfall in May - San José Viejo, Mexico
  • Average rainfall in May: 1mm

The wettest month (with the highest rainfall) is September (83mm).
The driest months (with the least rainfall) are March and April (0mm).

Average rainfall days in May
San José Viejo, Mexico

Average rainfall days in May - San José Viejo, Mexico
  • Average rainfall days in May: 0.7 days

The month with the highest number of rainy days is August (15 days).
The month with the least rainy days is April (0.6 days).

Average daylight in May /
Average sunshine in May
San José Viejo, Mexico

Average daylight in May / Average sunshine in May - San José Viejo, Mexico
  • Average daylight in May: 13h and 2min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 42min).

  • Average sunshine in May: 11h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).

Average sunshine days in May
San José Viejo, Mexico

Average sunshine days in May - San José Viejo, Mexico
  • Average sunshine days in May: 29.6 days

The month with the most sunshine days is March (30.2 days).
The month with the least sunshine days is August (13.3 days).

Average UV index in May
San José Viejo, Mexico

Average UV index in May - San José Viejo, Mexico
  • Average UV index in May: 7

The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is December (UV index 5).

Average cloud cover in May
San José Viejo, Mexico

Average cloud cover in May - San José Viejo, Mexico
  • Average cloud cover in May: 7

The month with the most cloud cover is September (Cloud cover 21).
The month with the least cloud cover is May (Cloud cover 7).

Average visibility in May
San José Viejo, Mexico

Average visibility in May - San José Viejo, Mexico
  • Average visibility in May: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

San José Viejo, Mexico

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