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SunnyDays

ERA5 almanac — 8 years of real data

Oaxaca in November

Oaxaca in November: 10% of days see measurable rain, 78°F average high, 68% of days historically clear (n=240, ERA5 2018–2025).

Oaxaca in November is a mixed month for sun: 68% of days historically clear (n=240, avg high 78°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 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 November

Clear-sky percentage for Oaxaca in November, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early November
1st–15th		 65% n=120 78°F
Late November
16th–end		 72% n=120 78°F
Full month average 68% n=240 78°F

Sunshine & warmth in November

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 Oaxaca in November. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early November
1st–15th		 93% n=120
Late November
16th–end		 98% n=120
Full month average 96% n=240
10.9 h median sunshine per day 99% of days exceed 8 h sunshine 10% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 68%. Sunshine-based “warm & sunny”: 96%. The 28-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

Oaxaca clears solidly in November: 68% of days historically (n=240), avg high 78°F. Most trips here in November will find more sun than cloud.

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 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 ← this page 68% n=240 All destinations →
December 84% n=248 All destinations →

Frequently asked

Does it rain in Oaxaca in November?

Rarely. Only 10% of days in Oaxaca see measurable rain in November, based on 8 years of ERA5 historical data (n=240 days, 2018–2025). This is a historical average, not a forecast.

Is Oaxaca good for sun in November?

Yes. Oaxaca is historically strong for sun in November: 68% of days are clear on average (avg high 78°F, n=240 days, ERA5 2018–2025).

How Oaxaca compares in November

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