Skip to main content
SunnyDays

ERA5 almanac — 8 years of real data

Dubrovnik in August

Dubrovnik in August: 19% of days see measurable rain, 86°F average high, 63% of days historically clear (n=248, ERA5 2018–2025).

Dubrovnik in August is a mixed month for sun: 63% of days historically clear (n=248, avg high 86°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 Dubrovnik 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 August

Clear-sky percentage for Dubrovnik in August, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early August
1st–15th		 71% n=120 86°F
Late August
16th–end		 56% n=128 86°F
Full month average 63% n=248 86°F

Sunshine & warmth in August

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 Dubrovnik in August. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early August
1st–15th		 99% n=120
Late August
16th–end		 99% n=128
Full month average 99% n=248
13.3 h median sunshine per day 98% of days exceed 8 h sunshine 19% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 63%. Sunshine-based “warm & sunny”: 99%. The 36-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

Dubrovnik clears solidly in August: 63% of days historically (n=248), avg high 86°F. Most trips here in August will find more sun than cloud.

Every month in Dubrovnik

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

Historical clear-sky % for Dubrovnik, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 0% n=248 All destinations →
February 0% n=226 All destinations →
March 0% n=248 All destinations →
April 10% n=240 All destinations →
May 22% n=248 All destinations →
June 62% n=240 All destinations →
July 77% n=248 All destinations →
August ← this page 63% n=248 All destinations →
September 56% n=240 All destinations →
October 28% n=248 All destinations →
November 1% n=240 All destinations →
December 0% n=248 All destinations →

Frequently asked

Does it rain in Dubrovnik in August?

Rarely. Only 19% of days in Dubrovnik see measurable rain in August, based on 8 years of ERA5 historical data (n=248 days, 2018–2025). This is a historical average, not a forecast.

Is Dubrovnik good for sun in August?

Yes. Dubrovnik is historically strong for sun in August: 63% of days are clear on average (avg high 86°F, n=248 days, ERA5 2018–2025).

How Dubrovnik compares in August

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