Weather in Warrnambool in January

Prime time. If you get to pick your dates, January is the one. Highs average 20.7 °C, lows 14.9 °C, and rain falls on 5 days — nothing in the month is working against you.

January is the highest-scoring month of the twelve. The nearest rival is February, and the month at the other end of the year is July.

Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 5.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest January day reached 36.2 °C and the coldest night fell to 11.3 °C, and the wettest single day dropped 51 mm — roughly 131% of the month's rain in one day.

January is moderately variable: 3 mm in the driest year against 119 mm in the wettest, around an average of 39 mm. Roughly two Januarys in three land near that average, and the third does something else entirely.

Wind sits around 17.8 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity is unremarkable at 73%.

How January sits in the year

Temperatures hold steady either side: 19.2 °C in December, 20.7 here, 20.8 in February. Nothing about the timing within the month matters much.

Daylight in January

January is at or near the longest days of Warrnambool's year: 14.6 hours of daylight, losing 0.7 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 17.4 °C in January — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. This is the warmest the water gets all year.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

January in Warrnambool versus nearby

If Warrnambool is one option among several, the nearby comparison is worth making. Ballarat is close enough to be a coin toss — 7.4 °C warmer, 1 day more rain. Mount Gambier is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: January is the answer for Warrnambool. If it is booked out or priced out, February is the next best thing at 2 points behind, and July is the month to keep off the shortlist.

Every month in Warrnambool

See all twelve months in Warrnambool, or where else to go in January.