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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in San Leon, Texas, is another mild winter month, with an average temperature fluctuating between 49.5°F (9.7°C) and 59.5°F (15.3°C). San Leon's January weather reaches an average high of 59.5°F (15.3°C) and an average low of 49.5°F (9.7°C), making it the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a refreshing month in San Leon, Texas, with an average temperature ranging between max 62.6°F (17°C) and min 53.4°F (11.9°C). San Leon experiences a minor change to an enjoyable 62.6°F (17°C) in average high-temperature during February, closely reflecting January. Weather in February »
Weather in March
March, the first month of the spring in San Leon, is an agreeable month, with temperature in the range of an average low of 59.4°F (15.2°C) and an average high of 68.5°F (20.3°C). March's arrival brings a slight change in high-temperatures, adjusting from a refreshing 62.6°F (17°C) in February to an agreeable 68.5°F (20.3°C). Weather in March »
Weather in April
April in San Leon, Texas, is a moderately hot spring month, with temperature in the range of an average high of 74.8°F (23.8°C) and an average low of 65.5°F (18.6°C). A minor escalation in the average high-temperature is seen with the onset of April, moving from an agreeable 68.5°F (20.3°C) in March to a moderately hot 74.8°F (23.8°C). Weather in April »
Weather in May
May, the last month of the spring in San Leon, is another warm month, with temperature in the range of an average low of 72.5°F (22.5°C) and an average high of 81.3°F (27.4°C). The start of May brings a subtle rise in the average high-temperature, moving from 74.8°F (23.8°C) in April to a still moderately hot 81.3°F (27.4°C). Weather in May »
Weather in June
June, the first month of the summer in San Leon, is a hot month, with an average temperature varying between 78.8°F (26°C) and 86.7°F (30.4°C). In San Leon, the average high-temperature in June slightly rises, from a moderately hot 81.3°F (27.4°C) in May, to a tropical 86.7°F (30.4°C). Weather in June »
Weather in July
July, the same as June, in San Leon, Texas, is another hot summer month, with an average temperature varying between 80.2°F (26.8°C) and 88.3°F (31.3°C). The average high-temperature for July is a still tropical 88.3°F (31.3°C), closely aligning with the temperature of the preceding month. Weather in July »
Weather in August
August, the last month of the summer in San Leon, is another tropical month, with an average temperature ranging between max 89.2°F (31.8°C) and min 80.2°F (26.8°C). August registers as the month with the highest average temperatures, reaching 89.2°F (31.8°C) at its peak and 80.2°F (26.8°C) at the lowest. For most parts of August, the heat index is evaluated at a scorching 105.8°F (41°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in San Leon, Texas, with an average temperature ranging between max 85.5°F (29.7°C) and min 76.8°F (24.9°C). The initiation of September records an average high-temperature of a moderately hot 85.5°F (29.7°C), displaying a near consistency with the previous month. Weather in September »
Weather in October
October, like September, in San Leon, Texas, is another warm autumn month, with an average temperature ranging between min 68.7°F (20.4°C) and max 78.8°F (26°C). During the shift to October, San Leon records a mild decrease in average high-temperature, moving from 85.5°F (29.7°C) in September to a still moderately hot 78.8°F (26°C). Weather in October »
Weather in November
The last month of the autumn, November, is also an agreeable month in San Leon, Texas, with an average temperature varying between 58.8°F (14.9°C) and 68.9°F (20.5°C). In November, the average high-temperature decreases from a moderately hot 78.8°F (26°C) in October to a pleasant 68.9°F (20.5°C). Weather in November »
Weather in December
December, the first month of the winter in San Leon, is still a comfortable month, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 62.2°F (16.8°C). With the onset of December, San Leon's average high-temperature slightly adjusts, moderately receding from November's agreeable 68.9°F (20.5°C) to a comfortable 62.2°F (16.8°C). Weather in December »
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
January, known for its average high temperature of 59.5°F (15.3°C) and an average low temperature of 49.5°F (9.7°C), is the coldest month.
How much does it rain?
Throughout the year, there are 188.2 rainfall days, and 44.13" (1121mm) of precipitation is accumulated.
When does it snow?
The only month with snowfall is January.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 0.3 days and accumulates 0.04" (1mm) of snow.
How many days does it snow?
Throughout the year, there are 0.4 snowfall days, and 0.04" (1mm) of snow is accumulated.
What is the month with the coldest ocean?
With an average ocean temperature of 56.5°F (13.6°C), January is the month with the coldest seawater.
What is the most humid month?
With an average relative humidity of 81%, February is the most humid month.
When it does not snow?
In San Leon, snow does not fall in February through December.
What is the driest month?
March is the month with the least rainfall. Rain falls for 14 days and accumulates 1.81" (46mm) of precipitation.
When is Daylight Saving Time (DST) in San Leon?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in San Leon, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What are the months with the highest UV index?
May through August, with an average maximum UV index of 7, are months with the highest UV index in San Leon.
When are the longest days?
With an average of 14h and 0min of daylight, June has the longest days of the year.
What are the months with the most sunshine?
July and August, with an average of 10.7h of sunshine, are months with the most sunshine in San Leon, Texas.
What are the warmest months?
August, noted for its average high-temperature of 89.2°F (31.8°C) and an average low-temperature of 80.2°F (26.8°C), is considered the warmest month in San Leon.
What is the month with the warmest ocean in San Leon?
With an average ocean temperature of 87.3°F (30.7°C), August is the month with the warmest seawater.
What is the rainiest month?
The month with the most rainfall is September, when the rain falls for 20.5 days and typically aggregates up to 6.77" (172mm) of precipitation.
What is the least humid month?
With an average relative humidity of 72%, October is the least humid month in San Leon.
What is the month with the shortest days in San Leon?
December has the shortest days of the year, with an average of 10h and 18min of daylight.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 4.9h of sunshine.
What is the month with the lowest UV index in San Leon?
With an average maximum UV index of 3, December is the month with the lowest UV index.
Average temperature
San Leon, TX
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is January (59.5°F).
The months with the highest average low temperature are July and August (80.2°F).
The coldest month (with the lowest average low temperature) is January (49.5°F).
Average pressure
San Leon, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
San Leon, TX
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.6mph - Average wind speed in April:
11.4mph - Average wind speed in May:
10.7mph - Average wind speed in June:
9.4mph
- Average wind speed in July:
8.6mph - Average wind speed in August:
8.3mph - Average wind speed in September:
8.3mph - Average wind speed in October:
9.8mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.5mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest months (with the lowest average wind speed) are August and September (8.3mph).
Average humidity
San Leon, TX
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall
San Leon, TX
- Average rainfall in January:
2.36" - Average rainfall in February:
1.89" - Average rainfall in March:
1.81" - Average rainfall in April:
2.32" - Average rainfall in May:
4.33" - Average rainfall in June:
4.41"
- Average rainfall in July:
5.24" - Average rainfall in August:
6.3" - Average rainfall in September:
6.77" - Average rainfall in October:
3.58" - Average rainfall in November:
2.44" - Average rainfall in December:
2.68"
The wettest month (with the highest rainfall) is September (6.77").
The driest month (with the least rainfall) is March (1.81").
Average rainfall days
San Leon, TX
- Average rainfall days in January:
12.6 days - Average rainfall days in February:
13.5 days - Average rainfall days in March:
14 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
13.7 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
19.9 days - Average rainfall days in August:
22.1 days - Average rainfall days in September:
20.5 days - Average rainfall days in October:
13.6 days - Average rainfall days in November:
11.6 days - Average rainfall days in December:
15.3 days
The month with the highest number of rainy days is August (22.1 days).
The month with the least rainy days is November (11.6 days).
Average snowfall
San Leon, TX
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
San Leon, TX
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.1 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature
San Leon, TX
The best month for swimming (with the highest average sea temperature) is August (87.2°F).
The coldest month (with the lowest average sea temperature) is January (56.5°F).
Average daylight / Average sunshine
San Leon, TX
- Average daylight in January:
10h and 3min - Average daylight in February:
11h and 1min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 4min - Average daylight in June:
14h and 0min
- Average daylight in July:
13h and 5min - Average daylight in August:
13h and 1min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 4min - Average daylight in December:
10h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January:
5h and 2min - Average sunshine in February:
5h and 5min - Average sunshine in March:
7h and 0min - Average sunshine in April:
8h and 4min - Average sunshine in May:
10h and 0min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 4min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days
San Leon, TX
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
11 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.1 days - Average sunshine days in May:
13.9 days - Average sunshine days in June:
8 days
- Average sunshine days in July:
7.9 days - Average sunshine days in August:
6.3 days - Average sunshine days in September:
7.9 days - Average sunshine days in October:
15.8 days - Average sunshine days in November:
15.4 days - Average sunshine days in December:
13.5 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is August (6.3 days).
Average UV index
San Leon, TX
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
San Leon, TX
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility
San Leon, TX
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
San Leon, Texas, USA
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