Weather in Sidney in January 2026
- January is usually the coldest month of the year in Sidney;
Average weather
Average temperature in Sidney in January
The expected average maximum temperature in January is -2°C with a maximum of +5°C and a minimum of -24°C.
The average maximum temperature goes down 17% by the end of the month, compared with the beginning of the month, from -2°C to -7°C.
Is Sidney warm or cold in January?
Sidney is typically cold in January.
Maximum temperatures go down compared to the previous month from -2°C to -3°C. The minimum temperature also goes down from -11°C to -12°C.
Wear your winter warms as it will be cold. To save space, layer, and don’t forget gloves and a scarf.
January is the coldest month in Sidney, here is the comparison with other months:
Climate in Sidney in January
| December | January | February | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| -2°C | -3°C | -1°C | ||||
| Min. temperature | ||||||
| -39°C | -38°C | -38°C | ||||
| Max. temperature | ||||||
| +18°C | +15°C | +19°C | ||||
| Rainfall | ||||||
| 2 mm | 1 mm | 2 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 75% | 75% | 73% | ||||
| Air pressure | ||||||
| 1018 HPa | 1019 HPa | 1019 HPa | ||||
| Sunny days | ||||||
| 7 | 6 | 6 | ||||
| Cloudy days | ||||||
| 15 | 16 | 14 | ||||
| Rainy days | ||||||
| 1 | 1 | 1 | ||||
| Snowy days | ||||||
| 9 | 8 | 7 | ||||
January weather is still as ok as in December. It’s getting colder in January. From -2°C in the day, the average maximum temperature lowers to -3°C. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 2 mm to 1 mm. Humidity levels don’t change as the month goes on, averaging around 75%. The average wind speed doesn’t change much during January, staying around 3 m/s. The days becoming less sunny, going from 7 sunny days in December to 6 in January.
But maybe it is worth considering traveling in February as the weather gets better.
Wind
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Sidney is gradually increasing during January, going from 1 m/s to 3 m/s over the course of the month.
Rain
Snow
Here’s how January is compared with other months in the amount of snow, total mm:
How was the weather last January in Sidney?
Climate Change over Years
The climate in Sidney in January has not changed much over the last 43 years.
The average temperature was the lowest in 1996 (+10°C) and the highest in 2021 (+16°C). The driest year was 1984 with only 161 mm of rainfall, and the wettest year was 2019 with 602 mm.
FAQ
Is January a good time to visit Sidney?
Can you sunbathe in Sidney in January?
Is Sidney rainy in January?
Is it sunny in Sidney in January?
Other cities in USA
Monthly weather in Sidney
Source of the data
For this page, we’ve looked at the typical weather in Sidney, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
