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SunnyDays

ERA5 almanac — 8 years of real data

Belize in April

Belize in April: 48% of days see measurable rain, 86°F average high, 18% of days historically clear (n=240, ERA5 2018–2025).

Belize in April is historically a poor month for sun: only 18% of days clear across 8 years (n=240, avg high 86°F). March is the clearest month for Belize 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 Belize 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 April

Clear-sky percentage for Belize in April, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early April
1st–15th		 25% n=120 86°F
Late April
16th–end		 12% n=120 86°F
Full month average 18% n=240 86°F

Sunshine & warmth in April

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 Belize in April. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early April
1st–15th		 99% n=120
Late April
16th–end		 100% n=120
Full month average 100% n=240
12.0 h median sunshine per day 98% of days exceed 8 h sunshine 48% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 18%. Sunshine-based “warm & sunny”: 100%. The 82-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

Belize is a poor choice for sun in April: just 18% of days clear historically (n=240). March 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 March — historically the best month for sun in Belize.

Every month in Belize

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

Historical clear-sky % for Belize, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 14% n=248 All destinations →
February 14% n=226 All destinations →
March 18% n=248 All destinations →
April ← this page 18% n=240 All destinations →
May 9% n=248 All destinations →
June 4% n=240 All destinations →
July 2% n=248 All destinations →
August 0% n=248 All destinations →
September 0% n=240 All destinations →
October 5% n=248 All destinations →
November 7% n=240 All destinations →
December 10% n=248 All destinations →

Frequently asked

Does it rain in Belize in April?

Sometimes. Belize sees measurable rain on 48% of days in April historically (n=240 days, ERA5 2018–2025) — not frequent enough to plan around, but not negligible either.

Is Belize good for sun in April?

Not usually. Belize is historically overcast in April: only 18% of days are clear (avg high 86°F, n=240 days, ERA5 2018–2025). March is historically far better for sun here.

How Belize compares in April

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