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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Roslyn's climate page.
Roslyn Temperature in December
Min Temperature
1°C (34°F)
Max Temperature
8°C (46°F)
Water Temperature
9°C (48°F) *
Chance of Rain
40%
Precipitation
124 mm (4.9 in)
Rainy days
12 days
Humidity
64% *
Windspeed
6 m/s (12 knots) *
Sunshine
141 hours *
Percentage Sunshine
48% *
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Roslyn in December
Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 9°C (48°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Roslyn in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Roslyn's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Roslyn climate overview or explore weather in the United States of America.
