Heading outdoors to celebrate New Year’s Eve? Singapore’s NYE celebrations are set to unfold under warm, humid skies with a good chance of showers and thunderstorms, especially in the late afternoon and evening of December 31, 2025. Temperatures are expected to hover around 28 to 30°C in the day—dipping only slightly to the mid-20s at night—so conditions will feel sticky even after dark. With the Northeast Monsoon in full swing and December being Singapore’s wettest month, party goers should be ready for passing downpours rather than clear, crisp countdown weather. Here’s the predicted weather forecast in Singapore for New Year’s Eve on December 31.
What the forecast looks like for Dec 31 in Singapore
The second half of December 2025 is dominated by Northeast Monsoon conditions, bringing frequent thundery showers in the afternoon and early evening across the island, including Marina Bay and the downtown core. Meanwhile, the outlook suggests New Year’s Eve will have high humidity above 80% and spells of moderate to heavy rain, alongside bouts of thunder and lightning.
In fact, weather reports predict more than 90% chance of evening thunder showers on December 31, 2025 and January 1, 2026. Therefore, thundery showers may roll through midnight on Dec 31 and put a damper on your 2026 countdown celebrations.
Despite the unsettled skies, iconic events such as Marina Bay Countdown and fireworks are still expected to draw big crowds in Singapore. From Merlion Park to the heartlands, Gardens By The Bay, and more…locals and tourists alike can enjoy New Year’s Eve comfortably with umbrellas and ponchos during passing showers. Plus, electronics and cameras are best kept in dry bags if you’re celebrating outdoors.
Otherwise, those wanting to celebrate NYE under dry conditions can book stunning restaurants, covered rooftop bars, or head to indoor venues hosting parties and family-friendly gatherings. Discover all the best indoor New Year’s Eve 2025 events in Singapore here. More to follow on the New Year’s Eve weather in Singapore.
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