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SunnyDays

ERA5 almanac — 8 years of real data

Exuma in January

Exuma in January: 24% of days see measurable rain, 76°F average high, 38% of days historically clear (n=248, ERA5 2018–2025).

Exuma in January is historically a poor month for sun: only 38% of days clear across 8 years (n=248, avg high 76°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 Exuma 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 January

Clear-sky percentage for Exuma in January, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early January
1st–15th		 35% n=120 76°F
Late January
16th–end		 41% n=128 76°F
Full month average 38% n=248 76°F

Sunshine & warmth in January

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 Exuma in January. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early January
1st–15th		 93% n=120
Late January
16th–end		 94% n=128
Full month average 94% n=248
10.3 h median sunshine per day 90% of days exceed 8 h sunshine 24% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 38%. Sunshine-based “warm & sunny”: 94%. The 56-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

Exuma is mostly overcast in January historically: only 38% of days are clear across 8 years (n=248), avg high 76°F. Most visitors this month will see more clouds than sun.

Every month in Exuma

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

Historical clear-sky % for Exuma, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January ← this page 38% n=248 All destinations →
February 39% n=226 All destinations →
March 45% n=248 All destinations →
April 46% n=240 All destinations →
May 27% n=248 All destinations →
June 20% n=240 All destinations →
July 25% n=248 All destinations →
August 18% n=248 All destinations →
September 20% n=240 All destinations →
October 12% n=248 All destinations →
November 25% n=240 All destinations →
December 37% n=248 All destinations →

Frequently asked

Does it rain in Exuma in January?

Sometimes. Exuma sees measurable rain on 24% of days in January historically (n=248 days, ERA5 2018–2025) — not frequent enough to plan around, but not negligible either.

Is Exuma good for sun in January?

It's mixed. Exuma in January is clear on 38% of days historically (avg high 76°F, n=248 days, ERA5 2018–2025) — the outcome varies year to year.

How Exuma compares in January

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