Skip to main content
SunnyDays

ERA5 almanac — 8 years of real data

Maldives in September

Maldives in September: 61% of days see measurable rain, 83°F average high, 15% of days historically clear (n=240, ERA5 2018–2025).

Maldives in September is historically a poor month for sun: only 15% of days clear across 8 years (n=240, avg high 83°F). February is the clearest month for Maldives 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 Maldives 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 September

Clear-sky percentage for Maldives in September, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early September
1st–15th		 19% n=120 83°F
Late September
16th–end		 11% n=120 83°F
Full month average 15% n=240 83°F

Sunshine & warmth in September

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 Maldives in September. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early September
1st–15th		 92% n=120
Late September
16th–end		 88% n=120
Full month average 90% n=240
11.6 h median sunshine per day 85% of days exceed 8 h sunshine 61% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 15%. Sunshine-based “warm & sunny”: 90%. The 75-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

Maldives is a poor choice for sun in September: just 15% of days clear historically (n=240). 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 Maldives.

Every month in Maldives

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

Historical clear-sky % for Maldives, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 33% n=248 All destinations →
February 40% n=226 All destinations →
March 36% n=248 All destinations →
April 22% n=240 All destinations →
May 7% n=248 All destinations →
June 17% n=240 All destinations →
July 18% n=248 All destinations →
August 26% n=248 All destinations →
September ← this page 15% n=240 All destinations →
October 18% n=248 All destinations →
November 18% n=240 All destinations →
December 16% n=248 All destinations →

Frequently asked

Does it rain in Maldives in September?

Yes, frequently. In Maldives, 61% of days in September see measurable rain, based on 8 years of ERA5 historical data (n=240 days, 2018–2025). This is a historical average, not a forecast.

Is Maldives good for sun in September?

Not usually. Maldives is historically overcast in September: only 15% of days are clear (avg high 83°F, n=240 days, ERA5 2018–2025). February is historically far better for sun here.

How Maldives compares in September

Head-to-head clear-sky comparisons against destinations travelers plausibly weigh against Maldives this month — same passport tier, similar flight distance, both sides from the same 8-year ERA5 record.

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.