Climate and monthly weather forecast
San Leon, TX

Share

Weather in January

January, like December, is another refreshing winter month in San Leon, Texas, with an average temperature varying between 49.5°F (9.7°C) and 59.5°F (15.3°C). San Leon's coldest month, January, generally records average temperatures ranging from a high of 59.5°F (15.3°C) to a low of 49.5°F (9.7°C). 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 varying between 53.4°F (11.9°C) and 62.6°F (17°C). A minimal variation is noted in San Leon's average high-temperature at the onset of February, reaching a comfortable 62.6°F (17°C) from January's 59.5°F (15.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a pleasant month in San Leon, Texas, with an average temperature fluctuating between 59.4°F (15.2°C) and 68.5°F (20.3°C). March signifies a subtle uplift in the average high-temperature, adjusting from an enjoyable 62.6°F (17°C) in February to an agreeable 68.5°F (20.3°C). Weather in March »

Weather in April

April is a moderately hot spring month in San Leon, Texas, with an average temperature varying between 74.8°F (23.8°C) and 65.5°F (18.6°C). San Leon's April weather indicates a minor increase in high-temperatures, edging from March's agreeable 68.5°F (20.3°C) 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 also a moderately hot month, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 72.5°F (22.5°C). May introduces a minor temperature shift, with average high-temperatures adjusting from April's 74.8°F (23.8°C) to a still warm 81.3°F (27.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in San Leon, Texas, with an average temperature varying between 86.7°F (30.4°C) and 78.8°F (26°C). With the onset of June, San Leon's average high-temperature experiences a slight rise, moving from May's moderately hot 81.3°F (27.4°C) to a tropical 86.7°F (30.4°C). Weather in June »

Weather in July

July, like June, is a hot summer month in San Leon, Texas, with an average temperature varying between 88.3°F (31.3°C) and 80.2°F (26.8°C). July's onset brings an average high-temperature of a still hot 88.3°F (31.3°C), showing a minute difference from June's 86.7°F (30.4°C). Weather in July »

Weather in August

August, the last month of the summer in San Leon, is another hot month, with an average temperature varying between 89.2°F (31.8°C) and 80.2°F (26.8°C). San Leon's August weather, with an average high temperature of 89.2°F (31.8°C) and an average low temperature of 80.2°F (26.8°C), tends to be the warmest of the year. During August, the heat index is estimated 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 varying between 76.8°F (24.9°C) and 85.5°F (29.7°C). As San Leon, Texas, transitions from August to September, the average high-temperatures adjust to a warm 85.5°F (29.7°C), nearly the same as the previous 89.2°F (31.8°C). Weather in September »

Weather in October

October, like September, in San Leon, Texas, is another warm autumn month, with an average temperature varying between 68.7°F (20.4°C) and 78.8°F (26°C). October's onset introduces a mild reduction in the average high-temperature, from a warm 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 temperature in the range of an average low of 58.8°F (14.9°C) and an average high of 68.9°F (20.5°C). November shows a mild decline in the average high-temperature, falling from October's warm 78.8°F (26°C) to an agreeable 68.9°F (20.5°C). Weather in November »

Weather in December

December, the first month of the winter in San Leon, is also an enjoyable month, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 52.7°F (11.5°C). San Leon records a mild change in average high-temperature during December, easing from a pleasant 68.9°F (20.5°C) in November to an enjoyable 62.2°F (16.8°C). Weather in December »
Updated: Feb 14, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What part of the year is the coldest in San Leon?

San Leon, Texas, reaches its average lowest temperatures in January, measuring 59.5°F (15.3°C) at the peak and 49.5°F (9.7°C) at the lowest.

How much does it rain in San Leon?

In San Leon, Texas, during the entire year, the rain falls for 188.2 days and collects up to 44.13" (1121mm) of precipitation.

When does it snow in San Leon?

The only month with snowfall in San Leon, Texas, is January.

What is the snowiest month in San Leon?

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 in San Leon?

In San Leon, Texas, during the entire year, snow falls for 0.4 days and aggregates up to 0.04" (1mm) of snow.

What month is the ocean coldest in San Leon?

The month with the coldest seawater is January, with an average ocean temperature of 56.5°F (13.6°C).

What is the most humid month in San Leon?

The most humid month is February, with an average relative humidity of 81%.

When it does not snow in San Leon?

In San Leon, snow does not fall in February through December.

What is the driest month in San Leon?

The month with the least rainfall in San Leon is March, when the rain falls for 14 days and typically collects 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, Texas, 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.

When is the highest UV index in San Leon?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

When are the longest days in San Leon?

The month with the longest days in San Leon, Texas, is June, with an average of 14h and 0min of daylight.

What are the months with the most sunshine in San Leon?

July and August, with an average of 10.7h of sunshine, are months with the most sunshine in San Leon.

What time of the year is the hottest in San Leon?

In San Leon, August registers the highest temperatures, averaging 89.2°F (31.8°C) at the peak and 80.2°F (26.8°C) at the lowest.

What month is the ocean warmest 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 in San Leon?

September is the month with the most rainfall in San Leon. Rain falls for 20.5 days and accumulates 6.77" (172mm) of precipitation.

What is the least humid month in San Leon?

October is the least humid month in San Leon, with an average relative humidity of 72%.

What is the month with the shortest days in San Leon?

The month with the shortest days in San Leon is December, with an average of 10h and 18min of daylight.

What is the month with the least sunshine in San Leon?

The month with the least sunshine is December, 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

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).

[Resources]

Average pressure
San Leon, TX

Average pressure - San Leon, TX

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed
San Leon, TX

Average wind speed - San Leon, TX

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).

[Resources]

Average rainfall
San Leon, TX

Average rainfall - San Leon, TX

The wettest month (with the highest rainfall) is September (6.77").
The driest month (with the least rainfall) is March (1.81").

[Resources]

Average rainfall days
San Leon, TX

Average rainfall days - San Leon, TX

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).

[Resources]

Average snowfall
San Leon, TX

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").

[Resources]

Average snowfall days
San Leon, TX

Average snowfall days - San Leon, TX

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).

[Resources]

Average sea temperature
San Leon, TX

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).

[Resources]

Average daylight / Average sunshine
San Leon, TX

Average daylight / Average sunshine - San Leon, TX

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).

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).

[Resources]

Average sunshine days
San Leon, TX

Average sunshine days - San Leon, TX

The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is August (6.3 days).

[Resources]

Average visibility
San Leon, TX

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).

[Resources]

San Leon, Texas, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location