January weather forecast
Happy Valley, Hong Kong

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Weather in January

The city of Happy Valley in Hong Kong starts the year with cool temperatures and moderate rainfall. Humidity level begins to increase, and there is a noticeable difference in daylight, with almost 11 hours per day. Compared to February, the average high temperature is slightly lower and the rainfall amount is minimal. Remarkably, the dry wind gusts can reach up to 20.4km/h (12.7mph). Evenings often offer clear skies, making it a suitable period for stargazing.

Temperature

In Happy Valley, January records the lowest average temperatures, peaking at 18.5°C (65.3°F) and reaching a low of 15°C (59°F).

Humidity

In January, the average relative humidity in Happy Valley is 73%.

Rainfall

In Happy Valley, during January, the rain falls for 12.6 days and regularly aggregates up to 25mm (0.98") of precipitation. Throughout the year, there are 224.5 rainfall days, and 1264mm (49.76") of precipitation is accumulated.

Daylight

The average length of the day in January in Happy Valley is 10h and 57min.
On the first day of the month, sunrise is at 07:02 and sunset at 17:50. On the last day of January, in Happy Valley, sunrise is at 07:02 and sunset at 18:10 HKT.

Sunshine

In Happy Valley, the average sunshine in January is 5.9h.

UV index

The month with the lowest UV index in Happy Valley is January, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 in January transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Updated: Feb 19, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What part of the year is the coldest in Happy Valley?

January is the coldest month, with an average high-temperature of 18.5°C (65.3°F) and an average low-temperature of 15°C (59°F).

What is the usual temperature for Happy Valley in January?

The high-temperature, in January, in Happy Valley, is 18.5°C (65.3°F), while the low-temperature averages to 15°C (59°F).

What is the average humidity in January in Happy Valley?

In January, the average relative humidity in Happy Valley is 73%.

How much does it rain in Happy Valley in January?

In Happy Valley, Hong Kong, in January, it is raining for 12.6 days, with typically 25mm (0.98") of accumulated precipitation.

What is the average length of the day in January in Happy Valley?

In Happy Valley, Hong Kong, the average day length in January is 10h and 57min.

When are sunrise and sunset in January in Happy Valley?

On the first day of January in Happy Valley, sunrise is at 07:02 and sunset at 17:50. On the last day of the month, sunrise is at 07:02 and sunset at 18:10 HKT.

How long on average sun shines in January in Happy Valley?

The average sunshine duration in January is 5.9h.

What is the month with the lowest UV index in Happy Valley?

With an average maximum UV index of 4, January is the month with the lowest UV index in Happy Valley.

What is the UV index reading in January in Happy Valley?

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

Average temperature in January
Happy Valley, Hong Kong

Average temperature in January - Happy Valley, Hong Kong
  • Average high temperature in January: 18.5°C

The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (18.5°C).

  • Average low temperature in January: 15°C

The month with the highest average low temperature is August (27.7°C).
The coldest month (with the lowest average low temperature) is January (15°C).

Average pressure in January
Happy Valley, Hong Kong

Average pressure in January - Happy Valley, Hong Kong
  • Average pressure in January: 1020.3mbar

The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is August (1004.8mbar).

Average wind speed in January
Happy Valley, Hong Kong

Average wind speed in January - Happy Valley, Hong Kong
  • Average wind speed in January: 15.5km/h

The windiest month (with the highest average wind speed) is December (16km/h).
The calmest month (with the lowest average wind speed) is August (12.4km/h).

Average humidity in January
Happy Valley, Hong Kong

Average humidity in January - Happy Valley, Hong Kong
  • Average humidity in January: 73%

The month with the highest relative humidity is May (84%).
The month with the lowest relative humidity is December (70%).

Average rainfall in January
Happy Valley, Hong Kong

Average rainfall in January - Happy Valley, Hong Kong
  • Average rainfall in January: 25mm

The wettest month (with the highest rainfall) is August (223mm).
The driest month (with the least rainfall) is December (23mm).

Average rainfall days in January
Happy Valley, Hong Kong

Average rainfall days in January - Happy Valley, Hong Kong
  • Average rainfall days in January: 12.6 days

The month with the highest number of rainy days is July (26.8 days).
The month with the least rainy days is December (11.2 days).

Average daylight in January /
Average sunshine in January
Happy Valley, Hong Kong

Average daylight in January / Average sunshine in January - Happy Valley, Hong Kong
  • Average daylight in January: 10h and 5min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).

  • Average sunshine in January: 5h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is March (Average sunshine: 5h and 18min).

Average sunshine days in January
Happy Valley, Hong Kong

Average sunshine days in January - Happy Valley, Hong Kong
  • Average sunshine days in January: 15.3 days

The month with the most sunshine days is December (16.9 days).
The month with the least sunshine days is July (3.1 days).

Average UV index in January
Happy Valley, Hong Kong

Average UV index in January - Happy Valley, Hong Kong
  • Average UV index in January: 4

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

Average cloud cover in January
Happy Valley, Hong Kong

Average cloud cover in January - Happy Valley, Hong Kong
  • Average cloud cover in January: 48

The month with the most cloud cover is March (Cloud cover 61).
The months with the least cloud cover are September and October (Cloud cover 35).

Average visibility in January
Happy Valley, Hong Kong

Average visibility in January - Happy Valley, Hong Kong
  • Average visibility in January: 9km

The months with the highest visibility are September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July and August (9km).

Happy Valley, Hong Kong

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