ERA5 almanac — 8 years of real data

Oaxaca in June

Oaxaca in June: rain frequency data not yet backfilled for this month, 80°F average high, 16% of days historically clear (n=240, ERA5 2018–2025).

Oaxaca in June is historically a poor month for sun: only 16% of days clear across 8 years (n=240, avg high 80°F). February is the clearest month for Oaxaca 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 Oaxaca 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 Oaxaca 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	20%	n=120	80°F
Late June 16th–end	12%	n=120	80°F
Full month average	16%	n=240	80°F

Bottom line

Oaxaca is a poor choice for sun in June: just 16% of days clear historically (n=240). February is the historically strongest month for sun here. The 8-year record is consistent — this is not a fluke bad stretch.

→ See all destinations in February — historically the best month for sun in Oaxaca.

Every month in Oaxaca

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

Historical clear-sky % for Oaxaca, all months, ERA5 2018–2025.
Month	% Clear	Sample (n)
January	82%	n=248	All destinations →
February	90%	n=226	All destinations →
March	86%	n=248	All destinations →
April	70%	n=240	All destinations →
May	45%	n=248	All destinations →
June ← this page	16%	n=240	All destinations →
July	9%	n=248	All destinations →
August	6%	n=248	All destinations →
September	6%	n=240	All destinations →
October	28%	n=248	All destinations →
November	68%	n=240	All destinations →
December	84%	n=248	All destinations →

Frequently asked

Is Oaxaca good for sun in June?

Not usually. Oaxaca is historically overcast in June: only 16% of days are clear (avg high 80°F, n=240 days, ERA5 2018–2025). February is historically far better for sun here.

→ Oaxaca live forecast — this week’s actual 7-day weather, not historical
→ Best destinations in June — all destinations ranked by June 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.