Skip to main content
SunnyDays

ERA5 almanac — 8 years of real data

Wilmington in June

Wilmington in June: 52% of days see measurable rain, 84°F average high, 22% of days historically clear (n=240, ERA5 2018–2025).

Wilmington in June is historically a poor month for sun: only 22% of days clear across 8 years (n=240, avg high 84°F). October is the clearest month for Wilmington 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 Wilmington 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 June

Clear-sky percentage for Wilmington in June, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early June
1st–15th		 22% n=120 84°F
Late June
16th–end		 22% n=120 84°F
Full month average 22% n=240 84°F

Sunshine & warmth in June

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 Wilmington in June. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early June
1st–15th		 89% n=120
Late June
16th–end		 93% n=120
Full month average 91% n=240
12.8 h median sunshine per day 90% of days exceed 8 h sunshine 52% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 22%. Sunshine-based “warm & sunny”: 91%. The 69-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

Wilmington is mostly overcast in June historically: only 22% of days are clear across 8 years (n=240), avg high 84°F. If you want sun in Wilmington, October is historically much better. Most visitors this month will see more clouds than sun.

→ See all destinations in October — historically the best month for sun in Wilmington.

Every month in Wilmington

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

Historical clear-sky % for Wilmington, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 1% n=248 All destinations →
February 7% n=226 All destinations →
March 12% n=248 All destinations →
April 32% n=240 All destinations →
May 34% n=248 All destinations →
June ← this page 22% n=240 All destinations →
July 16% n=248 All destinations →
August 19% n=248 All destinations →
September 36% n=240 All destinations →
October 40% n=248 All destinations →
November 8% n=240 All destinations →
December 3% n=248 All destinations →

Frequently asked

Does it rain in Wilmington in June?

Yes, frequently. In Wilmington, 52% of days in June 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 Wilmington good for sun in June?

Not usually. Wilmington is historically overcast in June: only 22% of days are clear (avg high 84°F, n=240 days, ERA5 2018–2025). October is historically far better for sun here.

How Wilmington compares in June

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