v256.0 · climate · SG · verified 2026-04
Singapore climate profile
Climate profile for Singapore — Köppen climate zones, seasonal temperature + rainfall, humidity, extreme weather, climate-change trajectory, air quality, best months for visiting + relocation, water security, and recent climate-policy changes.
Climate classification (Köppen)
Tropical rainforest (Af) — hot + humid year-round, two monsoons, no distinct seasons
Temperature + rainfall by season
| Winter temperatures | 25-31°C year-round (no winter) · December coolest with NE monsoon · Slight rain cooling |
| Summer temperatures | 25-32°C year-round · Mar-May warmest avg 28-29°C · Heat index regularly 38-40°C with humidity |
| Annual rainfall | 2,340 mm — among world's wettest equatorial cities · NE monsoon Dec-Mar (wettest) · SW monsoon Jun-Sep (windier) · Inter-monsoon Apr-May + Oct-Nov · 178 rainy days/year |
| Humidity | 70-90% year-round (avg 84%) · Among world's most humid major cities · Dehumidified indoor AC standard |
Climate zones within the country
Single tropical-rainforest zone · Urban Heat Island makes city center 2-4°C warmer than greener areas
Extreme weather + risks
| Extreme weather events | No tropical cyclones (equatorial calm) · No earthquakes · Flash flooding (urban, especially Dec-Mar) · Indonesian forest-fire haze episodes dry-season (Aug-Oct, less recent thanks to peatland regulation) |
| Air quality | Generally good (PM2.5 avg ~12 µg/m³ 2024) · Haze episodes dry-season can spike PSI 100-200+ (unhealthy) |
| Water security | Stressed naturally but world-class management — 4 National Taps: local catchment + Johor import + NEWater (treated wastewater) + desalination · Marina Barrage flood + water-supply infrastructure · Climate-Change-resilient |
Climate change trajectory
Among Asia's most prepared cities for climate-adaptation · Annual mean +1.1°C since 1948 · Projected +1.4-4.6°C by 2100 (1.5-2.5x global average due to UHI + low latitude) · Sea-level rise 1m+ threat by 2100 (responding with polder design)
Best months for visiting + relocation
| Best for visiting | Year-round (no off-season but Dec-Feb cooler/wetter; Feb-Apr peak humidity) · Avoid haze months Aug-Oct if asthmatic |
| Best for relocation | Year-round; first months take 4-6 weeks acclimatization to heat + humidity |
Recent changes (2023-2026)
2024-25: Climate-resilience investments continuing (Marina Barrage, polders) · 2030 + 2050 Green Plan implementing · No specific extreme-weather events in 2024 · Indonesia haze 2023 episode managed
Source: official Singapore meteorological agency · Last verified 2026-04
See also: Singapore country profile · climate atlas