January weather forecastUpper Swan, Australia

January

Weather in January

January, the same as December, in Upper Swan, Australia, is a hot summer month, with an average temperature varying between 31.8°C (89.2°F) and 18.4°C (65.1°F).

Temperature

Shifting into January, Upper Swan records an average high-temperature of a still hot 31.8°C (89.2°F), presenting minor fluctuations compared to the previous month. Upper Swan notes a substantial temperature decline from the daytime peaks throughout January, with an average nighttime temperature of 18.4°C (65.1°F).

Heat index

The heat index in January is computed to be a hot 34°C (93.2°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

January is the least humid month in Upper Swan, with an average relative humidity of 49%.

Rainfall

In Upper Swan, Australia, in January, during 5.1 rainfall days, 12mm (0.47") of precipitation is typically accumulated. In Upper Swan, during the entire year, the rain falls for 100 days and collects up to 290mm (11.42") of precipitation.

Daylight

In January, the average length of the day in Upper Swan, Australia, is 13h and 57min.
On the first day of the month, sunrise is at 5:13 am and sunset at 7:24 pm. On the last day of January, in Upper Swan, Australia, sunrise is at 5:39 am and sunset at 7:18 pm AWST.

Sunshine

The months with the most sunshine in Upper Swan are January and December, with an average of 11.5h of sunshine.

UV index

The average daily maximum UV index in January in Upper Swan is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 6 in January translates into this advice:
Deflect overexposure. Sun protection is a necessity. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.

Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in January, in Upper Swan, is 31.8°C (89.2°F) and the average low-temperature is 18.4°C (65.1°F). In January, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 34°C (93.2°F).

January is the least humid month, with an average relative humidity of 49%.

In January, the average relative humidity in Upper Swan is 49%.

In Upper Swan, in January, it is raining for 5.1 days, with typically 12mm (0.47") of accumulated precipitation.

In Upper Swan, the average day length in January is 13h and 57min.

In January, on the first day of the month, sunrise is at 5:13 am and sunset at 7:24 pm. On the last day of the month, in Upper Swan, sunrise is at 5:39 am and sunset at 7:18 pm AWST.

January and December, with an average of 11.5h of sunshine, are months with the most sunshine in Upper Swan.

In January, the average sunshine duration in Upper Swan, Australia, is 11.5h.

The average daily maximum UV index in January in Upper Swan, Australia, is 6. A UV Index reading of 6 to 7 represents a high health 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

30°C

31.8°C

32°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

14.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

24.5

24.3

21.7

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Upper Swan, Australia

Average high temperature in January: 31.8°C

The warmest month (with the highest average high temperature) is February (32°C).
The month with the lowest average high temperature is July (16.8°C).

Average low temperature in January: 18.4°C

The month with the highest average low temperature is February (18.9°C).
The coldest month (with the lowest average low temperature) is August (8.5°C).

Average pressure in January
Upper Swan, Australia

Average pressure in January: 1011mbar

The month with the highest atmospheric pressure is July (1020.7mbar).
The month with the lowest atmospheric pressure is January (1011mbar).

Average wind speed in January
Upper Swan, Australia

Average wind speed in January: 12.6km/h

The windiest months (with the highest average wind speed) are January and February (12.6km/h).
The calmest months (with the lowest average wind speed) are May and July (10km/h).

Average humidity in January
Upper Swan, Australia

Average humidity in January: 49%

The months with the highest relative humidity are July and August (78%).
The month with the lowest relative humidity is January (49%).

Average rainfall in January
Upper Swan, Australia

Average rainfall in January: 12mm

The wettest month (with the highest rainfall) is June (51mm).
The driest months (with the least rainfall) are March and December (9mm).

Average rainfall days in January
Upper Swan, Australia

Average rainfall days in January: 5.1 days

The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is February (4.8 days).

Average daylight in January /
Average sunshine in January
Upper Swan, Australia

Average daylight in January: 14h and 0min

The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).

Average sunshine in January: 11h and 30min

The months with the most sunshine are January and December (Average sunshine: 11h and 30min).
The month with the least sunshine is August (Average sunshine: 5h and 42min).

Average sunshine days in January
Upper Swan, Australia

Average sunshine days in January: 24.3 days

The month with the most sunshine days is December (24.5 days).
The month with the least sunshine days is July (15.1 days).

Average UV index in January
Upper Swan, Australia

Average UV index in January: 6

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

Average cloud cover in January
Upper Swan, Australia

Average cloud cover in January: 14

The months with the most cloud cover are July and August (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 14).

Average visibility in January
Upper Swan, Australia

Average visibility in January: 10km

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