Monthly weather averages & travel planning

Oceania › 🇦🇺 Australia › Melbourne
Updated: March 2026
December is a good time to visit Melbourne (6/10). With 7 daily sunshine hours and only 6 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 3rd sunniest of the year in Melbourne. Culture-focused travellers and those who prefer lighter crowds will find December a practical choice, with prices running lower than peak January without sacrificing all the good weather. January offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Melbourne's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
Based on 30-year climate normals (1991 to 2020), December in Melbourne averages 24°C by day and 16°C overnight, a range that places it firmly in the warmer tier of the annual calendar. The month records approximately 7 sunshine hours per day and 70mm of total rainfall across 6 wet days, giving it a sunshine-to-rain ratio that is broadly workable for most itineraries.
24°C
75°F
Avg High
16°C
61°F
Avg Low
6 days
70 mm total
Rain Days
7h
per day avg
Sunshine
65%
Moderate
Humidity
The 8°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 15 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 75°F average high, 61°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Melbourne in December means dressing for 24°C days and 16°C evenings. A light cotton tee with a casual overshirt works well at 24°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 16°C, a modest 8°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues.
Local tip: Layers are more practical than a single heavy garment in Melbourne. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
December has no major festivals or public holidays in Melbourne, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 24°C average highs and 6 rainy days
December in Melbourne reflects a mid-latitude climate pattern, with temperatures averaging 24°C by day and 16°C overnight. The city sits at 38 degrees south latitude, where the balance between solar radiation and heat loss drives conditions that are neither extreme nor static. Conditions occupy the comfortable middle band of the annual temperature range, where outdoor activity is feasible without the extremes of midsummer heat or midwinter cold. Day-to-night temperature variation of 8°C is moderate and manageable with a single mid-layer. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Melbourne in December
December ranks 3rd sunniest of the year in Melbourne, with an average 7 daily sunshine hours. The driest months are April, May, and June. December is the hottest month (24°C avg high); June is the coolest (5°C). From here, temperatures fall 1°C into January. Compared to last month (November: 23°C high, 6 rain days), December is warmer and equally dry. December is among the top three sunniest months to visit Melbourne.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 23°C | 15°C | 6 | 7h | View |
| February | 19°C | 11°C | 5 | 6h | View |
| March | 15°C | 7°C | 4 | 4h | View |
| April | 10°C | 2°C | 3 | 2h | View |
| May | 6°C | -2°C | 3 | 1h | View |
| June | 5°C | -3°C | 3 | 1h | View |
| July | 6°C | -2°C | 3 | 1h | View |
| August | 10°C | 2°C | 3 | 3h | View |
| September | 15°C | 7°C | 4 | 4h | View |
| October | 19°C | 11°C | 5 | 6h | View |
| November | 23°C | 15°C | 6 | 7h | View |
| December | 24°C | 16°C | 6 | 7h | View |
January
6 rain days, 7h sun
February
5 rain days, 6h sun
March
4 rain days, 4h sun
April
3 rain days, 2h sun
May
3 rain days, 1h sun
June
3 rain days, 1h sun
July
3 rain days, 1h sun
August
3 rain days, 3h sun
September
4 rain days, 4h sun
October
5 rain days, 6h sun
November
6 rain days, 7h sun
December
6 rain days, 7h sun
Data Sources for Melbourne
Climate normals represent 30-year averages (1991-2020). Individual years may vary.