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SunnyDays

ERA5 almanac — 8 years of real data

Singapore in March

Singapore in March: 82% of days see measurable rain, 88°F average high, 6% of days historically clear (n=248, ERA5 2018–2025).

Singapore in March is historically a poor month for sun: only 6% of days clear across 8 years (n=248, avg high 88°F). February is the clearest month for Singapore historically. Historical average, not a forecast.

What you are reading: 8-year historical averages from the ERA5 reanalysis, not a forecast. A month that is historically 90% clear can still be overcast on your specific trip. For this week’s actual forecast, see the live Singapore page. Both can be true at once: “historically strong in this month; this particular week is not.” We label which is which.

Early vs. Late March

Clear-sky percentage for Singapore in March, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early March
1st–15th		 7% n=120 88°F
Late March
16th–end		 6% n=128 88°F
Full month average 6% n=248 88°F

Sunshine & warmth in March

A second measure using actual sunshine hours (ERA5 sunshine_duration), not the daily weather code. A Lowcountry day with 12 hours of sun and a 25-minute afternoon storm is counted below as a warm, sunny day — because it was. How we define this.

Sunshine-based metrics for Singapore in March. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early March
1st–15th		 92% n=120
Late March
16th–end		 95% n=128
Full month average 94% n=248
11.3 h median sunshine per day 90% of days exceed 8 h sunshine 82% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 6%. Sunshine-based “warm & sunny”: 94%. The 88-point gap is from brief afternoon convective storms that stamp the whole day as “rain” in the WMO code but leave the bulk of the sunshine untouched.

Bottom line

Singapore is a poor choice for sun in March: just 6% of days clear historically (n=248). February is the historically strongest month for sun here. The 8-year record is consistent — this is not a fluke bad stretch.

→ See all destinations in February — historically the best month for sun in Singapore.

Every month in Singapore

Compare across all months with data. Numbers are historical clear-sky %.

Historical clear-sky % for Singapore, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 4% n=248 All destinations →
February 10% n=226 All destinations →
March ← this page 6% n=248 All destinations →
April 2% n=240 All destinations →
May 3% n=248 All destinations →
June 4% n=240 All destinations →
July 3% n=248 All destinations →
August 2% n=248 All destinations →
September 6% n=240 All destinations →
October 3% n=248 All destinations →
November 1% n=240 All destinations →
December 1% n=248 All destinations →

Frequently asked

Does it rain in Singapore in March?

Yes, frequently. In Singapore, 82% of days in March see measurable rain, based on 8 years of ERA5 historical data (n=248 days, 2018–2025). This is a historical average, not a forecast.

Is Singapore good for sun in March?

Not usually. Singapore is historically overcast in March: only 6% of days are clear (avg high 88°F, n=248 days, ERA5 2018–2025). February is historically far better for sun here.

All percentages are historical averages from the ERA5 reanalysis via Open-Meteo, 8 full years (2018–2025). “Clear” means avg high ≥ 72 °F, precipitation < 1 mm, and a non-precipitation weather code. This is history, not a forecast. The live 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.