January weather - Winter 2025

Weather in January
Frequently asked questions
Average temperature in January
Average pressure in January
Average wind speed in January
Average humidity in January
Average rainfall in January
Average rainfall days in January
Average snowfall days in January
Average sea temperature in January
Average daylight in January
Average sunshine in January
Average sunshine days in January
Average UV index in January
Average cloud cover in January
Average visibility in January

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 is the coldest month in Galveston, 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

The average relative humidity in January is 77%.

Rainfall

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

Snowfall

Months with snowfall 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 is January, with an average ocean temperature of 56.5°F (13.6°C).
Note: Swimming in 56.5°F (13.6°C) feels unbearing at 55.4°F (13°C) and can be life-risking below 50°F (10°C), causing breathing issues and cold shock, depending on a person's capacity.

Daylight

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

Sunshine

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

UV index

January and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 4 in January converts into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Updated: Jul 14, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

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

What is the temperature in January?

The average high-temperature and low-temperature 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 January, the average relative humidity 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.

What is the snowiest month in Galveston?

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

When does it start snowing?

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

When is the ocean coldest?

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

How cold is the water in January?

In January, the average ocean temperature 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 is 10h and 31min.

When is the sunrise / sunset in January?

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 many hours of sunshine does Galveston have in January?

In January, the average sunshine duration is 5.4h.

What are the months with the lowest UV index?

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

What is the UV index reading in January?

In Galveston, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

62.6°F 17°C

59.7°F 15.4°C

62.2°F 16.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.9mph 20.8km/h

12.8mph 20.6km/h

12.9mph 20.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

10.1

10.8

Average snowfall days

0.3

0.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

14.3

18.2

14.8

Average UV index

Average cloud cover

Average visibility

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).

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).

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).

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%).

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").

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).

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).

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).

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).

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).

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).

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).

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).

January weather forecast
Galveston, TX

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