January in Great Blue Hole: strong conditions, 5th of 12
Good · 7.5/10January averages 27°C (80°F) and humidity near 79%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
At 106 mm this is a genuinely wet month: about 18 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 7.5/10 here, 5th of 12 months, against 9.5/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? April scores 2 points higher here — enough to change the trip.
February in Great Blue Hole — one of the year's strongest windows (3rd)
Best window · 8.6/10February averages 26°C (79°F) and humidity near 78%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Rainfall runs 72 mm, so plan one flexible day in three; you still get about 21 days with 6+ hours of sunshine and 11.4 hours of daylight.
A 8.6/10 puts this among the year's best months in Great Blue Hole (3rd of 12); only April scores higher, at 9.5/10.
Figure on mid-season pricing, with crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.
March is one of the strongest months in Great Blue Hole (2nd)
Best window · 8.7/10Days in March average 27°C (80°F) and humidity near 82% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Budget for roughly 72 mm of rain this month — a flexible day or two helps — with about 29 days with 6+ hours of sunshine and 11.9 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Great Blue Hole at 8.7/10 (2nd of 12), just behind April at 9.5/10.
Expect mid-season pricing, and crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.
April: the best month of the year in Great Blue Hole
Best window · 9.5/10April averages 28°C (82°F) and humidity near 82%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Expect 40 mm of rain — occasional showers rather than washed-out days — alongside about 30 days with 6+ hours of sunshine and 12.4 daylight hours.
On our climate-comfort scale this is the top-ranked month of the year for Great Blue Hole at 9.5/10 — the reference point every other month on this page is measured against.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
May in Great Blue Hole: strong conditions, 4th of 12
Good · 8.3/10Days in May average 28°C (83°F) and humidity near 83% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Budget for roughly 92 mm of rain this month — a flexible day or two helps — with about 30 days with 6+ hours of sunshine and 12.8 hours of daylight to work around it.
That is 8.3/10 on the same scale — 4th of 12 months, versus 9.5/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.
June in Great Blue Hole: mixed conditions, plan around the weather
Trade-offs · 6.8/10June averages 29°C (84°F) and humidity near 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
239 mm makes this the wettest stretch of the year, though about 27 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.
It scores 6.8/10 here, 8th of 12 months, against 9.5/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? April scores 2.7 points higher here — enough to change the trip.
July in Great Blue Hole — workable with trade-offs
Trade-offs · 6.8/10July averages 29°C (85°F) and humidity near 81%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
236 mm makes this the wettest stretch of the year, though about 28 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.
It scores 6.8/10 here, 9th of 12 months, against 9.5/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? April scores 2.7 points higher here — enough to change the trip.
August in Great Blue Hole: mixed conditions, plan around the weather
Trade-offs · 6.9/10Days in August average 29°C (85°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
This is the year's wettest stretch at 227 mm, but with about 28 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 6.9/10 on the same scale — 7th of 12 months, versus 9.5/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
If your dates are flexible, April is materially better in Great Blue Hole — 2.6 points higher on the same scale.
September in Great Blue Hole: strong conditions, 6th of 12
Good · 7.1/10Days in September average 30°C (85°F) and humidity near 80% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
184 mm of rain makes this a wet month here, though with about 25 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 7.1/10 on the same scale — 6th of 12 months, versus 9.5/10 for the best month here.
Expect low-season pricing, and crowds are light for this destination. That combination — decent conditions at the lowest rates of the year — is the best value window on this page.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
If your dates are flexible, April is materially better in Great Blue Hole — 2.4 points higher on the same scale.
October in Great Blue Hole — middling scores, decent value
Trade-offs · 6.3/10October averages 29°C (84°F) and humidity near 79%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
263 mm of rain puts this in monsoon territory — about 19 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 6.3/10 here, 10th of 12 months, against 9.5/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? April scores 3.2 points higher here — enough to change the trip.
November in Great Blue Hole — workable with trade-offs
Trade-offs · 5.6/10November averages 28°C (83°F) and humidity near 80%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
327 mm of rain puts this in monsoon territory — about 14 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 5.6/10 here, 11th of 12 months, against 9.5/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? April scores 3.9 points higher here — enough to change the trip.
December in Great Blue Hole: mixed conditions, plan around the weather
Trade-offs · 5.6/10Days in December average 27°C (81°F) and humidity near 79% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
191 mm of rain signals a properly wet month, with only about 11 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 5.6/10 on the same scale — 12th of 12 months, versus 9.5/10 for the best month here.
Expect low-season pricing, and crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
If your dates are flexible, April is materially better in Great Blue Hole — 3.9 points higher on the same scale.
