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SunnyDays

ERA5 almanac — 8 years of real data

Mérida in November

Mérida in November: 35% of days see measurable rain, 86°F average high, 38% of days historically clear (n=240, ERA5 2018–2025).

Mérida in November is historically a poor month for sun: only 38% of days clear across 8 years (n=240, avg high 86°F). 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 Mérida 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 Mérida 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		 29% n=120 86°F
Late November
16th–end		 47% n=120 86°F
Full month average 38% n=240 86°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 Mérida 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		 98% n=120
Late November
16th–end		 98% n=120
Full month average 98% n=240
10.7 h median sunshine per day 92% of days exceed 8 h sunshine 35% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 38%. Sunshine-based “warm & sunny”: 98%. The 60-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

Mérida is mostly overcast in November historically: only 38% of days are clear across 8 years (n=240), avg high 86°F. Most visitors this month will see more clouds than sun.

Every month in Mérida

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

Historical clear-sky % for Mérida, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 55% n=248 All destinations →
February 61% n=226 All destinations →
March 74% n=248 All destinations →
April 68% n=240 All destinations →
May 47% n=248 All destinations →
June 20% n=240 All destinations →
July 20% n=248 All destinations →
August 13% n=248 All destinations →
September 8% n=240 All destinations →
October 20% n=248 All destinations →
November ← this page 38% n=240 All destinations →
December 53% n=248 All destinations →

Frequently asked

Does it rain in Mérida in November?

Sometimes. Mérida sees measurable rain on 35% of days in November historically (n=240 days, ERA5 2018–2025) — not frequent enough to plan around, but not negligible either.

Is Mérida good for sun in November?

It's mixed. Mérida in November is clear on 38% of days historically (avg high 86°F, n=240 days, ERA5 2018–2025) — the outcome varies year to year.

How Mérida compares in November

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