January weather forecast
Long Jetty, Australia

January

Weather in January

January, like December, in Long Jetty, Australia, is a moderately hot summer month, with an average temperature fluctuating between 27°C (80.6°F) and 19.8°C (67.6°F).

Temperature

Long Jetty witnesses the warmest weather in January, with temperatures averaging a high of 27°C (80.6°F) and a low of 19.8°C (67.6°F).

Heat index

January's average heat index is calculated to be 29°C (84.2°F). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

In Long Jetty, Australia, the average relative humidity in January is 75%.

Rainfall

In Long Jetty, during January, the rain falls for 14.8 days and regularly aggregates up to 53mm (2.09") of precipitation. In Long Jetty, Australia, during the entire year, the rain falls for 156.9 days and collects up to 628mm (24.72") of precipitation.

Sea temperature

In January, the average sea temperature is 23.4°C (74.1°F).
Note: Swimming in 23.4°C (74.1°F) water can be enjoyable based on one's cold tolerance and conditions like sunshine, wind, and ambient temperature. (Olympic swimmers compete in waters between 25°C (77°F) and 28°C (82.4°F).)

Daylight

In January, the average length of the day is 14h and 4min.
On the first day of the month, sunrise is at 5:47 am and sunset at 8:06 pm. On the last day of January, sunrise is at 6:14 am and sunset at 7:59 pm AEDT.

Sunshine

The average sunshine in January is 8.4h.

UV index

January, February, October through December, with an average maximum UV index of 6, are months with the highest UV index in Long Jetty. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 6 in January, converts into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.

Frequently asked questions

What is the hottest time of year in Long Jetty?
January tends to be the warmest month in Long Jetty, Australia, with temperatures averaging a daily high of 27°C (80.6°F) and a low of 19.8°C (67.6°F).
What are January temperatures in Long Jetty?
Long Jetty in January has an average high-temperature of 27°C (80.6°F) and an average low-temperature of 19.8°C (67.6°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in January is calculated to be 29°C (84.2°F).
What is the average humidity in January in Long Jetty?
In January, the average relative humidity in Long Jetty, Australia, is 75%.
How much does it rain in Long Jetty in January?
In Long Jetty, Australia, in January, during 14.8 rainfall days, 53mm (2.09") of precipitation is typically accumulated.
What is the water temperature in January in Long Jetty?
In Long Jetty, Australia, the average seawater temperature in January is 23.4°C (74.1°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23.4°C (74.1°F) water.
What is the average length of the day in January in Long Jetty?
The average day length in January is 14h and 4min.
What time are sunrise and sunset in January in Long Jetty?
On the first day of January in Long Jetty, sunrise is at 5:47 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 7:59 pm AEDT.
How many hours of sunshine does Long Jetty have in January?
In Long Jetty, the average sunshine duration in January is 8.4h.
When is the highest UV index in Long Jetty?
January, February, October through December, with an average maximum UV index of 6, are months with the highest UV index.
What is the UV index reading in January in Long Jetty?
In January, the average daily maximum UV index in Long Jetty, Australia, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January
Long Jetty, Australia
  • Average high temperature in January: 27°C

The warmest month (with the highest average high temperature) is January (27°C).
The month with the lowest average high temperature is July (16.5°C).

  • Average low temperature in January: 19.8°C

The month with the highest average low temperature is January (19.8°C).
The coldest month (with the lowest average low temperature) is July (9.8°C).

Average pressure in January
Long Jetty, Australia
  • Average pressure in January: 1012.8mbar

The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.8mbar).

Average wind speed in January
Long Jetty, Australia
  • Average wind speed in January: 13.5km/h

The windiest month (with the highest average wind speed) is August (13.6km/h).
The calmest month (with the lowest average wind speed) is April (12km/h).

Average humidity in January
Long Jetty, Australia
  • Average humidity in January: 75%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (67%).

Average rainfall in January
Long Jetty, Australia
  • Average rainfall in January: 53mm

The wettest month (with the highest rainfall) is February (100mm).
The driest month (with the least rainfall) is August (34mm).

Average rainfall days in January
Long Jetty, Australia
  • Average rainfall days in January: 14.8 days

The month with the highest number of rainy days is March (16.5 days).
The month with the least rainy days is August (9.2 days).

Average sea temperature in January
Long Jetty, Australia
  • Average sea temperature in January: 23.4°C

The best month for swimming (with the highest average sea temperature) is February (23.8°C).
The coldest months (with the lowest average sea temperature) are August and September (18.8°C).

Average daylight in January /
Average sunshine in January
Long Jetty, Australia
  • Average daylight in January: 14h and 1min

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

  • Average sunshine in January: 8h and 2min

The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).

Average sunshine days in January
Long Jetty, Australia
  • Average sunshine days in January: 13.6 days

The month with the most sunshine days is August (20 days).
The month with the least sunshine days is February (10.6 days).

Average UV index in January
Long Jetty, Australia
  • Average UV index in January: 6

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

Average cloud cover in January
Long Jetty, Australia
  • Average cloud cover in January: 40

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in January
Long Jetty, Australia
  • Average visibility in January: 10km

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

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