July weather forecast
Santo Tomás La Unión, Guatemala

July

Weather in July

July, like June, in Santo Tomás La Unión, Guatemala, is a moderately hot summer month, with an average temperature ranging between max 29.8°C (85.6°F) and min 19.4°C (66.9°F).

Temperature

An average high-temperature of a still warm 29.8°C (85.6°F) marks July, exhibiting a close resemblance to the conditions in June. Santo Tomás La Unión, during July, witnesses an average low-temperature of 19.4°C (66.9°F).

Heat index

In July, the heat index is appraised at a torrid 35°C (95°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The average relative humidity in July is 73%.

Rainfall

In July, in Santo Tomás La Unión, the rain falls for 25 days. Throughout July, 161mm (6.34") of precipitation is accumulated. Throughout the year, there are 222.8 rainfall days, and 1491mm (58.7") of precipitation is accumulated.

Daylight

In July, the average length of the day is 12h and 53min.
On the first day of July in Santo Tomás La Unión, sunrise is at 05:40 and sunset at 18:38. On the last day of the month, sunrise is at 05:48 and sunset at 18:35 CST.

Sunshine

The months with the most sunshine are April and July, with an average of 11.2h of sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 6. The months with the lowest UV index in Santo Tomás La Unión are January through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during July leads to these advisories:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

How hot is July in Santo Tomás La Unión?
The high-temperature, in July, in Santo Tomás La Unión, records 29.8°C (85.6°F), while the low-temperature is 19.4°C (66.9°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in July is appraised at 35°C (95°F).
What is the average humidity in July in Santo Tomás La Unión?
In July, the average relative humidity in Santo Tomás La Unión is 73%.
How many days does it rain in July in Santo Tomás La Unión?
In Santo Tomás La Unión, during July, the rain falls for 25 days and regularly aggregates up to 161mm (6.34") of precipitation.
What is the average length of the day in July in Santo Tomás La Unión?
The average day length in July in Santo Tomás La Unión is 12h and 53min.
What time are sunrise and sunset in July in Santo Tomás La Unión?
In July, on the first day of the month, sunrise is at 05:40 and sunset at 18:38. On the last day of the month, sunrise is at 05:48 and sunset at 18:35 CST.
What are the months with the most sunshine in Santo Tomás La Unión?
The months with the most sunshine in Santo Tomás La Unión are April and July, with an average of 11.2h of sunshine.
How long on average sun shines in July in Santo Tomás La Unión?
The average sunshine duration in July in Santo Tomás La Unión, Guatemala, is 11.2h.
What are the months with the highest UV index in Santo Tomás La Unión?
The months with the highest UV index are January through December, with an average maximum UV index of 6.
When is the lowest UV index in Santo Tomás La Unión?
January through December, with an average maximum UV index of 6, are months with the lowest UV index.
How high is the UV index in July in Santo Tomás La Unión?
In Santo Tomás La Unión, Guatemala, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in July - Santo Tomás La Unión, Guatemala
Average temperature in July
Santo Tomás La Unión, Guatemala
  • Average high temperature in July: 29.8°C

The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is September (28.5°C).

  • Average low temperature in July: 19.4°C

The month with the highest average low temperature is May (20.5°C).
The coldest month (with the lowest average low temperature) is December (17.6°C).

Average pressure in July - Santo Tomás La Unión, Guatemala
Average pressure in July
Santo Tomás La Unión, Guatemala
  • Average pressure in July: 1013.5mbar

The month with the highest atmospheric pressure is January (1014.5mbar).
The month with the lowest atmospheric pressure is October (1012.2mbar).

Average wind speed in July - Santo Tomás La Unión, Guatemala
Average wind speed in July
Santo Tomás La Unión, Guatemala
  • Average wind speed in July: 6.1km/h

The windiest month (with the highest average wind speed) is March (6.6km/h).
The calmest month (with the lowest average wind speed) is May (5.1km/h).

Average humidity in July - Santo Tomás La Unión, Guatemala
Average humidity in July
Santo Tomás La Unión, Guatemala
  • Average humidity in July: 73%

The months with the highest relative humidity are September and October (79%).
The months with the lowest relative humidity are January, February and March (59%).

Average rainfall in July - Santo Tomás La Unión, Guatemala
Average rainfall in July
Santo Tomás La Unión, Guatemala
  • Average rainfall in July: 161mm

The wettest month (with the highest rainfall) is May (274mm).
The driest months (with the least rainfall) are January and February (7mm).

Average rainfall days in July - Santo Tomás La Unión, Guatemala
Average rainfall days in July
Santo Tomás La Unión, Guatemala
  • Average rainfall days in July: 25 days

The month with the highest number of rainy days is September (27.5 days).
The month with the least rainy days is January (4.8 days).

Average daylight in July / Average sunshine in July - Santo Tomás La Unión, Guatemala
Average daylight in July /
Average sunshine in July
Santo Tomás La Unión, Guatemala
  • Average daylight in July: 12h and 5min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in July: 11h and 1min

The months with the most sunshine are April and July (Average sunshine: 11h and 12min).
The month with the least sunshine is November (Average sunshine: 7h and 24min).

Average sunshine days in July - Santo Tomás La Unión, Guatemala
Average sunshine days in July
Santo Tomás La Unión, Guatemala
  • Average sunshine days in July: 4.5 days

The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is September (1.5 days).

Average UV index in July - Santo Tomás La Unión, Guatemala
Average UV index in July
Santo Tomás La Unión, Guatemala
  • Average UV index in July: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).

Average cloud cover in July - Santo Tomás La Unión, Guatemala
Average cloud cover in July
Santo Tomás La Unión, Guatemala
  • Average cloud cover in July: 30

The month with the most cloud cover is June (Cloud cover 38).
The month with the least cloud cover is January (Cloud cover 12).

Average visibility in July - Santo Tomás La Unión, Guatemala
Average visibility in July
Santo Tomás La Unión, Guatemala
  • Average visibility in July: 9km

The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).

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