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SunnyDays

ERA5 almanac — 8 years of real data

Málaga / Costa del Sol in September

Málaga / Costa del Sol in September: 15% of days see measurable rain, 82°F average high, 72% of days historically clear (n=240, ERA5 2018–2025).

Historically one of the better months to visit Málaga / Costa del Sol for sun: 72% of days are clear on average (n=240, avg high 82°F). Every percentage here is a historical average from 8 years of ERA5 data — 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 Málaga / Costa del Sol 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 Málaga / Costa del Sol 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		 71% n=120 82°F
Late September
16th–end		 73% n=120 82°F
Full month average 72% n=240 82°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 Málaga / Costa del Sol 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		 98% n=120
Late September
16th–end		 98% n=120
Full month average 98% n=240
11.8 h median sunshine per day 95% of days exceed 8 h sunshine 15% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 72%. Sunshine-based “warm & sunny”: 98%. The 26-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

Málaga / Costa del Sol clears solidly in September: 72% of days historically (n=240), avg high 82°F. Most trips here in September will find more sun than cloud.

Every month in Málaga / Costa del Sol

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

Historical clear-sky % for Málaga / Costa del Sol, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 4% n=248 All destinations →
February 7% n=226 All destinations →
March 14% n=248 All destinations →
April 24% n=240 All destinations →
May 67% n=248 All destinations →
June 86% n=240 All destinations →
July 95% n=248 All destinations →
August 88% n=248 All destinations →
September ← this page 72% n=240 All destinations →
October 61% n=248 All destinations →
November 20% n=240 All destinations →
December 3% n=248 All destinations →

Frequently asked

Does it rain in Málaga / Costa del Sol in September?

Rarely. Only 15% of days in Málaga / Costa del Sol see measurable rain in September, based on 8 years of ERA5 historical data (n=240 days, 2018–2025). This is a historical average, not a forecast.

Is Málaga / Costa del Sol good for sun in September?

Yes. Málaga / Costa del Sol is historically strong for sun in September: 72% of days are clear on average (avg high 82°F, n=240 days, ERA5 2018–2025).

How Málaga / Costa del Sol compares in September

Head-to-head clear-sky comparisons against destinations travelers plausibly weigh against Málaga / Costa del Sol 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.