Roslyn Weather in December

Roslyn in December sees low daytime temperatures of 8°C (46°F) and nighttime lows of 1°C (34°F). Rainfall is fairly high this month at around 124 mm (4.9 in), so pack a rain jacket to stay dry.

Rainfall in Roslyn in December

Expect around 12 days of rain based on historical data, with 124 mm (4.9 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Roslyn in December

Daytime temperatures in Roslyn reach 8°C (46°F) in December, dropping to 1°C (34°F) at night. Experience the winter season in December. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. Nights fall to 1°C (34°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Roslyn in December

The area enjoys a balanced 141 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Wind Speed in Roslyn in December

December sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.

Average water temperature in December

The water sits at 9°C (48°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.

December in Roslyn can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.