As the year draws to a close, Singapore’s weather is turning increasingly wet, with thundery showers expected to persist for the last two weeks of December 2025. According to the Meteorological Service Singapore (MSS), the island will continue to experience humid days, passing rain, and occasional heavy downpours. The widespread wet weather means that Singapore is in for a wet and thundery Christmas 2025—due to the Northeast Monsoon season. Indeed, these heavy thundery showers will dampen outdoor festive plans. Here’s what we know about the wet weather in Singapore this December.
What to expect from the wet weather in Singapore this December 2025
The weather forecast for Singapore indicates that most days will bring moderate to heavy thundery showers—usually in the late morning and afternoon. Although, some evenings may see isolated rainfall and lightning activity. Meanwhile, daily temperatures are expected to range between 23°C and 32°C.
Additionally, the MSS has advised the public to stay alert for potential flash floods in low-lying areas when rain intensity peaks. Plus, brief but intense storms could develop during monsoon surges.
The wet weather is not surprising, as December is among Singapore’s wettest months, as a result of the Northeast Monsoon surge. Therefore, residents are encouraged to keep umbrellas or raincoats handy as wet conditions persist into the final days of 2025. Nevertheless, perfect time for indoor activities.
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