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Thinking of visiting Fremantle in December? Expect high temperatures reaching 28°C (82°F) during the day, dropping to 18°C (64°F) at night, with the driest conditions of the year.
If your ideal day consists of dry skies and pleasant temperatures, March, April, May, September, October, November and December typically offer the best circumstances for Fremantle.
Pick a month to see the average temperature, rainfall and sunshine in Fremantle - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Fremantle typically rise from around 26°C (79°F) at the start of December to approximately 29°C (84°F) by the end. Nights are pleasant, with lows typically ranging from 14°C (57°F) to 18°C (64°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Fremantle spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Fremantle between 1976 and 2025, these are the recorded extremes during December.
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. Expect water temperatures of around 19°C (66°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Fremantle climate overview or explore weather in Australia.
Where to go in December - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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