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SunnyDays

ERA5 almanac — 8 years of real data

Seville in April

Seville in April: 26% of days see measurable rain, 74°F average high, 40% of days historically clear (n=240, ERA5 2018–2025).

Seville in April is a mixed month for sun: 40% of days historically clear (n=240, avg high 74°F). The outcome varies year to year — check the early/late split below. 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 Seville 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 April

Clear-sky percentage for Seville in April, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early April
1st–15th		 37% n=120 74°F
Late April
16th–end		 42% n=120 74°F
Full month average 40% n=240 74°F

Sunshine & warmth in April

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 Seville in April. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early April
1st–15th		 42% n=120
Late April
16th–end		 61% n=120
Full month average 52% n=240
11.9 h median sunshine per day 86% of days exceed 8 h sunshine 26% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 40%. Sunshine-based “warm & sunny”: 52%. The 12-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

Seville in April is genuinely mixed: 40% of days historically clear (n=240), avg high 74°F — more cloudy than clear. The outcome varies year to year; don't book if you need guaranteed sun.

Every month in Seville

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

Historical clear-sky % for Seville, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 1% n=248 All destinations →
February 11% n=226 All destinations →
March 26% n=248 All destinations →
April ← this page 40% n=240 All destinations →
May 74% n=248 All destinations →
June 82% n=240 All destinations →
July 99% n=248 All destinations →
August 96% n=248 All destinations →
September 76% n=240 All destinations →
October 63% n=248 All destinations →
November 16% n=240 All destinations →
December 0% n=248 All destinations →

Frequently asked

Does it rain in Seville in April?

Sometimes. Seville sees measurable rain on 26% of days in April historically (n=240 days, ERA5 2018–2025) — not frequent enough to plan around, but not negligible either.

Is Seville good for sun in April?

It's mixed. Seville in April is clear on 40% of days historically (avg high 74°F, n=240 days, ERA5 2018–2025) — the outcome varies year to year.

How Seville compares in April

Head-to-head clear-sky comparisons against destinations travelers plausibly weigh against Seville 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.