January weather forecast
Galveston, TX

the colorful red night sky in the seaside city of Galveston in Texas
the colorful red night sky in the seaside city of Galveston in Texas

Weather in January

January, the same as December, in Galveston, Texas, is another mild winter month, with an average temperature varying between 59.7°F (15.4°C) and 51.6°F (10.9°C).

Temperature

January is the coldest month, with an average high-temperature of 59.7°F (15.4°C) and an average low-temperature of 51.6°F (10.9°C).

Humidity

In January, the average relative humidity is 77%.

Rainfall

In Galveston, in January, during 10.1 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in Galveston, there are 161.9 rainfall days, and 24.33" (618mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Galveston are January and February. January has the most snowfall days of the year. Snow falls for 0.3 days.

Ocean temperature

The month with the coldest seawater in Galveston is January, with an average ocean temperature of 56.5°F (13.6°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

In January, the average length of the day in Galveston is 10h and 31min.
On the first day of the month, sunrise is at 7:13 am and sunset at 5:32 pm. On the last day of January, in Galveston, sunrise is at 7:08 am and sunset at 5:56 pm CST.

Sunshine

The average sunshine in January in Galveston is 5.4h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Galveston?

January is the coldest month, with an average high-temperature of 59.7°F (15.4°C) and an average low-temperature of 51.6°F (10.9°C).

What is the average humidity in January in Galveston?

In January, the average relative humidity in Galveston is 77%.

How many days does it rain in January in Galveston?

In January, the rain falls for 10.1 days. Throughout January, 1.22" (31mm) of precipitation is accumulated.

When does it snow the most in Galveston?

January has the most snowfall days of the year in Galveston, Texas. Snow falls for 0.3 days.

When does it start snowing in Galveston?

January is the first month it typically snows in Galveston. Throughout January, there are 0.3 snowfall days.

What month is the ocean coldest in Galveston?

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

What is the water temperature in January in Galveston?

In Galveston, Texas, the average seawater temperature in January is 56.5°F (13.6°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in January in Galveston?

The average day length in January in Galveston is 10h and 31min.

When is the sunrise / sunset in January in Galveston?

In January, on the first day of the month, sunrise is at 7:13 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:56 pm CST.

How many hours of sunshine does Galveston have in January?

In January, the average sunshine duration in Galveston is 5.4h.

When is the lowest UV index in Galveston?

January and December, with an average maximum UV index of 4, are months with the lowest UV index in Galveston, Texas.

How high is the UV index in January in Galveston?

The average daily maximum UV index in January in Galveston, Texas, is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in January
Galveston, TX

Average temperature in January - Galveston, TX
  • Average high temperature in January: 59.7°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (59.7°F).

  • Average low temperature in January: 51.6°F

The month with the highest average low temperature is August (81.9°F).
The coldest month (with the lowest average low temperature) is January (51.6°F).

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Average pressure in January
Galveston, TX

Average pressure in January - Galveston, TX
  • Average pressure in January: 30.16"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).

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Average wind speed in January
Galveston, TX

Average wind speed in January - Galveston, TX
  • Average wind speed in January: 12mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (9.4mph).

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Average humidity in January
Galveston, TX

Average humidity in January - Galveston, TX
  • Average humidity in January: 77%

The months with the highest relative humidity are February and March (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in January
Galveston, TX

Average rainfall in January - Galveston, TX
  • Average rainfall in January: 1.22"

The wettest month (with the highest rainfall) is September (4.29").
The driest months (with the least rainfall) are February and March (0.75").

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Average rainfall days in January
Galveston, TX

Average rainfall days in January - Galveston, TX
  • Average rainfall days in January: 10.1 days

The month with the highest number of rainy days is September (19.9 days).
The month with the least rainy days is January (10.1 days).

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Average snowfall days in January
Galveston, TX

Average snowfall days in January - Galveston, TX
  • Average snowfall days in January: 0.3 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).

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Average sea temperature in January
Galveston, TX

Average sea temperature in January - Galveston, TX
  • Average sea temperature in January: 56.5°F

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).

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Average daylight in January /
Average sunshine in January
Galveston, TX

Average daylight in January / Average sunshine in January - Galveston, TX
  • Average daylight in January: 10h and 31min

The month with the longest days is June (Average daylight: 13h and 59min).
The month with the shortest days is December (Average daylight: 10h and 19min).

  • Average sunshine in January: 5.4h

The month with the most sunshine is August (Average sunshine: 10.9h).
The month with the least sunshine is December (Average sunshine: 4.9h).

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Average sunshine days in January
Galveston, TX

Average sunshine days in January - Galveston, TX
  • Average sunshine days in January: 18.2 days

The month with the most sunshine days is January (18.2 days).
The month with the least sunshine days is August (8.3 days).

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Average UV index in January
Galveston, TX

Average UV index in January - Galveston, TX
  • Average UV index in January: 4

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

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Average cloud cover in January
Galveston, TX

Average cloud cover in January - Galveston, TX
  • Average cloud cover in January: 40

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July, August and October (Cloud cover 26).

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Average visibility in January
Galveston, TX

Average visibility in January - Galveston, TX
  • Average visibility in January: 6mi

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).

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