Singapore Weather in December
Singapore · Equatorial climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Singapore sees average temperatures ranging from a low of 23.6°C (74.5°F) to a high of 29.5°C (85.1°F), with a mean of 26.0°C (78.8°F). Compared to the annual average of 26.6°C (79.9°F), this month is 0.6°C cooler than the yearly norm. Precipitation averages 318.0mm, making it approximately 24.0mm wetter than the monthly average of 294.0mm. The city receives an average of 8.8 hours of sunshine per day during December, with relative humidity averaging 87.8%. Wind speeds reach an average maximum of 14.2 km/h. For travelers, this month offers a temperature experience in Singapore, with wetter-than-average conditions compared to the rest of the year.
If you're planning outdoor activities in Singapore, accept that you'll sweat — the question is how much. I did a 10km run at 7am in March: 27°C, 85% humidity, UV already at 7. Brutal but doable. MacRitchie Reservoir trail is best 6-8am; after that, heat becomes dangerous. The UV index hits 11+ year-round between 11am-3pm — avoid all direct sun. East Coast Park cycling is breezy enough to be pleasant even at noon. Rain comes hard and fast in afternoon thunderstorms, usually gone in 90 minutes. Hydrate aggressively, always.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 26.1°C (79.0°F) | 26.0°C (78.8°F) | 25.7°C (78.3°F) |
| Rainfall | 402.4mm | 318.0mm | 294.8mm |
| Sunshine | 8.1 hrs | 8.8 hrs | 8.6 hrs |
| Humidity | 89.3% | 87.8% | 86.4% |
| Wind | 11.9 km/h | 14.2 km/h | 16.6 km/h |
| Rainy Days | 29.8 | 30.8 | 29.2 |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Singapore in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Singapore in December?
The average temperature in Singapore during December ranges from 23.6°C (74.5°F) to 29.5°C (85.1°F), with a mean of 26.0°C (78.8°F).
How much does it rain in Singapore in December?
Singapore receives an average of 318.0mm of precipitation in December, spread across approximately 30.8 rainy days.
What should I pack for Singapore in December?
Based on December weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 318.0mm of precipitation.
Is December a good time to visit Singapore?
December is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Singapore
Cities with Similar December Climate (Equatorial)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 1.35°, 103.82°. Timezone: Asia/Singapore. Last updated: 2026-07-30.