ERA5 almanac — 8 years of real data

Ibiza in July

Ibiza in July: 4% of days see measurable rain, 87°F average high, 88% of days historically clear (n=248, ERA5 2018–2025).

Historically one of the better months to visit Ibiza for sun: 88% of days are clear on average (n=248, avg high 87°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 Ibiza 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 July

Clear-sky percentage for Ibiza in July, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period	% Clear days	Sample (n)	Avg high
Early July 1st–15th	87%	n=120	87°F
Late July 16th–end	89%	n=128	87°F
Full month average	88%	n=248	87°F

Sunshine & warmth in July

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 Ibiza in July. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period	Warm & sunny (≥72°F, >6 h sun)	Sample (n)
Early July 1st–15th	100%	n=120
Late July 16th–end	100%	n=128
Full month average	100%	n=248

14.0 h median sunshine per day 99% of days exceed 8 h sunshine 4% of days see ≥ 1 mm rain — rain is not hidden

Comparison (old vs new): WMO-code “clear” bar: 88%. Sunshine-based “warm & sunny”: 100%. 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

Ibiza is historically one of the best destinations for sun in July: 88% of days meet the clear bar (avg high 87°F, n=248 days across 8 years). Pack for outdoor activity — this month consistently delivers.

Every month in Ibiza

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

Historical clear-sky % for Ibiza, all months, ERA5 2018–2025.
Month	% Clear	Sample (n)
January	0%	n=248	All destinations →
February	0%	n=226	All destinations →
March	3%	n=248	All destinations →
April	8%	n=240	All destinations →
May	45%	n=248	All destinations →
June	82%	n=240	All destinations →
July ← this page	88%	n=248	All destinations →
August	79%	n=248	All destinations →
September	54%	n=240	All destinations →
October	47%	n=248	All destinations →
November	11%	n=240	All destinations →
December	0%	n=248	All destinations →

Frequently asked

Does it rain in Ibiza in July?

Rarely. Only 4% of days in Ibiza see measurable rain in July, based on 8 years of ERA5 historical data (n=248 days, 2018–2025). This is a historical average, not a forecast.

Is Ibiza good for sun in July?

Yes. Ibiza is historically strong for sun in July: 88% of days are clear on average (avg high 87°F, n=248 days, ERA5 2018–2025).

How Ibiza compares in July

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

→ Ibiza vs Lisbon in July — Lisbon is 85% clear historically
→ Ibiza vs Madrid in July — Madrid is 91% clear historically
→ Ibiza vs Sicily in July — Sicily is 91% clear historically

→ Ibiza live forecast — this week’s actual 7-day weather, not historical
→ Best destinations in July — all destinations ranked by July clear-sky %
→ All destinations
→ Raw data (JSON) — buckets, n, source

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.