Singapore Weather in May
Singapore · Equatorial climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
May in Singapore sees average temperatures ranging from a low of 25.2°C (77.4°F) to a high of 30.3°C (86.5°F), with a mean of 27.5°C (81.5°F). Compared to the annual average of 26.6°C (79.9°F), this month is 0.9°C warmer than the yearly norm. This is the hottest month of the year, reaching 30.3°C (86.5°F) on average. Precipitation averages 329.4mm, making it approximately 35.0mm wetter than the monthly average of 294.0mm. The city receives an average of 9.4 hours of sunshine per day during May, with relative humidity averaging 86.8%. Wind speeds reach an average maximum of 12.1 km/h. For travelers, this month offers a hottest month of the year 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.
May vs Adjacent Months
| Metric | April | May | June |
|---|---|---|---|
| Mean Temp | 27.1°C (80.8°F) | 27.5°C (81.5°F) | 26.9°C (80.4°F) |
| Rainfall | 287.9mm | 329.4mm | 389.0mm |
| Sunshine | 9.9 hrs | 9.4 hrs | 9.0 hrs |
| Humidity | 86.8% | 86.8% | 87.1% |
| Wind | 11.2 km/h | 12.1 km/h | 12.6 km/h |
| Rainy Days | 30.0 | 29.6 | 29.8 |
Seasonal Context
May falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Singapore in May, 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 May?
The average temperature in Singapore during May ranges from 25.2°C (77.4°F) to 30.3°C (86.5°F), with a mean of 27.5°C (81.5°F).
How much does it rain in Singapore in May?
Singapore receives an average of 329.4mm of precipitation in May, spread across approximately 29.6 rainy days.
What should I pack for Singapore in May?
Based on May weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 329.4mm of precipitation.
Is May a good time to visit Singapore?
May is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Singapore
Cities with Similar May 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.