January weather forecast
Galveston, TX

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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

Starting off the year is a period of cold weather coupled with an average humidity signal of 77%. January sees a calm wind, moving at approximately 12mph (19.3km/h) and peaking at 18.3mph (29.5km/h). As Galveston transitions from the holiday season, residents prepare for less hours of sunshine, daylight, bouts of rainfall and even snowfall, albeit very limited. The oceanic temperature is slightly chilly, discouraging water activities. It may be a good time to capture great photography of clear blue skies as cloud coverage is at a moderate level.

Temperature

January tends to be the coldest month, with temperatures averaging a daily high of 59.7°F (15.4°C) and a low of 51.6°F (10.9°C).

Humidity

The average relative humidity in January in Galveston is 77%.

Rainfall

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

Snowfall

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

Ocean temperature

With an average ocean temperature of 56.5°F (13.6°C), January is the month with the coldest seawater.
Note: In 56.5°F (13.6°C), even brief exposure to 55.4°F (13°C) feels biting, and anything less than 50°F (10°C) risks cold shock and impaired breathing, considering one's health.

Daylight

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

Sunshine

In January, the average sunshine 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 of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, a regular UV index of 4 translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What is the coldest time of year in Galveston?

Temperature records in Galveston, Texas, mark January as the coldest month, with highs averaging 59.7°F (15.4°C) and lows at 51.6°F (10.9°C).

What is the average January temperature in Galveston?

The average high-temperature and low-temperature in Galveston, Texas, during January are 59.7°F (15.4°C) and 51.6°F (10.9°C) respectively.

What is the average humidity in January in Galveston?

In January, the average relative humidity is 77%.

How much does it rain in Galveston in January?

In Galveston, Texas, in January, during 10.1 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

When does it snow the most in Galveston?

The month with the most snowfall days in Galveston, Texas, is January, when snow falls for 0.3 days.

When does it start to snow in Galveston?

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

What month is the ocean coldest in Galveston?

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

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). Swimming in 56.5°F (13.6°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

In Galveston, Texas, the average day length in January is 10h and 31min.

When are sunrise and sunset in January in Galveston?

In January, on the first day of the month, sunrise is at 7:13 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:56 pm CST.

How long on average sun shines in January in Galveston?

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

What are the months with the lowest UV index in Galveston?

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

What is the UV index reading in January in Galveston?

The average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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 3min

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

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

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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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Galveston, Texas, USA

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