January weather - Winter 2024

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 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

Wood and rope barriers at sunset on the waterfront of Bayside Park in Chula Vista, San Diego Bay, California

Weather in January

Seasonal conditions cluster in January with a mixture of clear skies and rainfall. Around town, Chula Vista exemplifies mild winter weather typical of Southern California. Despite the lower temperatures, outdoor activities often persevere, only occasionally disrupted by the month's highest rainfall of 1.06" (27mm). Daylight is somewhat limited offering only 10.3 hours of visibility, but the city maintains its vibrant atmosphere. When compared to the upcoming warmer months, January represents a quieter yet still appealing time within the city.

Temperature

The advent of January brings an average high-temperature of a still enjoyable 65.1°F (18.4°C), exhibiting minor difference from the previous month. An average low-temperature of 51.8°F (11°C) is anticipated throughout the nights in Chula Vista during January.

Humidity

In Chula Vista, the average relative humidity in January is 59%.

Rainfall

In Chula Vista, in January, it is raining for 4.7 days, with typically 0.55" (14mm) of accumulated precipitation. In Chula Vista, during the entire year, the rain falls for 51 days and collects up to 5.63" (143mm) of precipitation.

Ocean temperature

In Chula Vista, the average seawater temperature in January is 59.4°F (15.2°C).
Note: In water with a temperature of 59.4°F (15.2°C), most individuals do not find swimming enjoyable. As the temperature falls from 69.8°F (21°C) to 59°F (15°C), breathing control becomes more difficult.

Daylight

In Chula Vista, the average length of the day in January is 10h and 17min.
On the first day of the month, sunrise is at 6:50 am and sunset at 4:53 pm. On the last day of January, sunrise is at 6:43 am and sunset at 5:19 pm PST.

Sunshine

In January, the average sunshine in Chula Vista is 6.8h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 4 in January converts into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

[Resources]

Frequently asked questions

What are the temperatures in Chula Vista in January?

The high-temperature, in January, in Chula Vista, is 65.1°F (18.4°C), while the low-temperature averages to 51.8°F (11°C).

What is the average humidity in January in Chula Vista?

In January, the average relative humidity is 59%.

How many days does it rain in January in Chula Vista?

In January, in Chula Vista, California, the rain falls for 4.7 days. Throughout January, 0.55" (14mm) of precipitation is accumulated.

What is the ocean temperature in January in Chula Vista?

In January, the average ocean temperature is 59.4°F (15.2°C). For most, swimming in 59.4°F (15.2°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Chula Vista have in January?

In January, the average day length is 10h and 17min.

What time are sunrise and sunset in January in Chula Vista?

In January, on the first day of the month, sunrise is at 6:50 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 5:19 pm PST.

How many hours of sunshine does Chula Vista have in January?

The average sunshine duration in January in Chula Vista is 6.8h.

When is the lowest UV index in Chula Vista?

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

How high is the UV index in January in Chula Vista?

In Chula Vista, the average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Dec

January

Feb

Average high temperature

63.7°F 17.6°C

65.1°F 18.4°C

64.2°F 17.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6mph 9.7km/h

5.8mph 9.3km/h

6.5mph 10.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

5.3

4.7

5.6

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

24.3

25.1

21.1

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Chula Vista, CA

Average high temperature in January: 65.1°F

The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (63.7°F).

Average low temperature in January: 51.8°F

The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).

[Resources]

Average pressure in January
Chula Vista, CA

Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).

[Resources]

Average wind speed in January
Chula Vista, CA

Average wind speed in January: 5.2mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is October (5mph).

[Resources]

Average humidity in January
Chula Vista, CA

Average humidity in January: 59%

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (58%).

[Resources]

Average rainfall in January
Chula Vista, CA

Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").

[Resources]

Average rainfall days in January
Chula Vista, CA

Average rainfall days in January: 4.7 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.7 days).

[Resources]

Average sea temperature in January
Chula Vista, CA

Average sea temperature in January: 59.2°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

[Resources]

Average daylight in January /
Average sunshine in January
Chula Vista, CA

Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

Average sunshine in January: 6h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

[Resources]

Average sunshine days in January
Chula Vista, CA

Average sunshine days in January: 25.1 days

The month with the most sunshine days is June (27.2 days).
The month with the least sunshine days is February (21.1 days).

[Resources]

Average UV index in January
Chula Vista, CA

Average UV index in January: 4

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

[Resources]

Average cloud cover in January
Chula Vista, CA

Average cloud cover in January: 20

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).

[Resources]

Average visibility in January
Chula Vista, CA

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).

[Resources]

January weather forecast
Chula Vista, CA

Contents