George Town climate

Cayman Islands · 19.29°N, 81.37°W · elevation 3 m · population 29,370

Warmest month
August
high 30 °C86 °F
Coldest month
January
low 25 °C77 °F
Wettest month
October
154 mm6.1 in
Best time to visit
November–May
by our comfort score
Annual precipitation
758 mm30 in
March driest
Year average
28 °C82 °F
tropical savanna (dry winter) (Aw)

George Town (Cayman Islands) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 28 °C82 °F, and about 758 mm30 in of precipitation falls in an average year.

Temperature by month

Average highAverage low
20°25°30°35°70°80°90°JFMAMJJASOND30°86°25°77°January: high 26 °C / 79 °F, low 25 °C / 77 °FFebruary: high 26 °C / 79 °F, low 25 °C / 77 °FMarch: high 27 °C / 80 °F, low 25 °C / 78 °FApril: high 27 °C / 81 °F, low 26 °C / 79 °FMay: high 28 °C / 83 °F, low 27 °C / 81 °FJune: high 29 °C / 84 °F, low 28 °C / 82 °FJuly: high 29 °C / 85 °F, low 29 °C / 83 °FAugust: high 30 °C / 86 °F, low 29 °C / 84 °FSeptember: high 30 °C / 85 °F, low 29 °C / 84 °FOctober: high 29 °C / 84 °F, low 28 °C / 83 °FNovember: high 28 °C / 82 °F, low 27 °C / 81 °FDecember: high 27 °C / 81 °F, low 26 °C / 79 °F

Precipitation by month

Precipitation per month (mminches)
0501001502000246JJanuary: 27 mm / 1.0 inFFebruary: 15 mm / 0.6 inMMarch: 13 mm / 0.5 inAApril: 14 mm / 0.6 inMMay: 66 mm / 2.6 inJJune: 94 mm / 3.7 inJJuly: 62 mm / 2.5 inAAugust: 81 mm / 3.2 inSSeptember: 105 mm / 4.1 inOOctober: 154 mm / 6.1 inNNovember: 88 mm / 3.4 inDDecember: 39 mm / 1.5 in1546.1

George Town climate table

Monthly averages, 2001–2025
MonthHigh °C°FLow °C°FMean °C°FPrecip. mmin
Jan267925772678271.0
Feb267925772678150.6
Mar278025782679130.5
Apr278126792780140.6
May288327812882662.6
Jun298428822883943.7
Jul298529832984622.5
Aug308629842985813.2
Sep3085298429841054.1
Oct2984288329841546.1
Nov288227812781883.4
Dec278126792780391.5
Year30862577288275830

“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.

Humidity, cloud, sun and daylight
MonthHumid.CloudSolarDaylight
Jan77%49%4.411:05
Feb77%37%5.311:29
Mar76%36%6.211:59
Apr77%35%6.812:34
May79%50%6.413:02
Jun81%64%6.013:17
Jul79%58%6.413:11
Aug78%57%6.212:47
Sep78%62%5.712:13
Oct79%63%4.811:40
Nov77%56%4.311:12
Dec78%47%4.210:58

Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.

What the climate of George Town is like

The warmest month is August, with an average high of 30 °C86 °F and a low of 29 °C84 °F. The coldest is January, when highs average 26 °C79 °F and lows 25 °C77 °F. Seasonal differences are small — just 3.7 °C6.6 °F between the warmest and the coolest month.

Annual precipitation is moderate at about 758 mm30 in. The wettest three-month stretch is September–November, which brings 46% of the annual total. Months with less than 20 mm0.8 in on average: February–April. The wettest month is October (154 mm6.1 in), the driest is March (13 mm0.5 in).

Relative humidity ranges from 76% in March to 81% in June. The clearest skies (lowest average cloud amount, 35%) are typical of April. Average wind speed near the ground ranges from 15 km/h (9 mph) in September to 22 km/h (14 mph) in November. Daylight lasts from about 11.0 hours in December to 13.3 hours in June.

Best time to visit George Town

Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–May: average highs of 26 °C79 °F to 28 °C83 °F with 13 mm0.5 in to 88 mm3.4 in of precipitation per month.

The most challenging month is October, which is very wet (154 mm6.1 in) and humid (79% relative humidity).

Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.

What to pack for George Town

  • Wetter months (May and June, August–November) — highs 2882 to 30 °C86 °F, lows 2781 to 29 °C84 °F, about 98 mm3.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
  • Drier months (December–April, July) — highs 2679 to 29 °C85 °F, lows 2577 to 29 °C83 °F, about 28 mm1.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.

How George Town compares

Compared with Cienfuegos, about 332 km to the north, George Town is on average 0.4 °C0.8 °F warmer and receives 40% more precipitation (758 mm30 in vs 540 mm21 in). The difference is largest in January (1.7 °C3.1 °F warmer).

Places in other countries with the most similar temperature and rainfall pattern: Kingstown (Saint Vincent and the Grenadines, BSh), Bridgetown (Barbados, Aw) and Road Town (British Virgin Islands, BSh).

Nearby places

All places in the Cayman Islands

Frequently asked questions

What is the warmest month in George Town?

August is the warmest month in George Town, with an average high of 30 °C (86 °F) and an average low of 29 °C (84 °F).

What is the coldest month in George Town?

January is the coldest month, with an average high of 26 °C (79 °F) and an average low of 25 °C (77 °F).

When does it rain the most in George Town?

October is the wettest month with about 154 mm (6.1 in) of precipitation; March is the driest with about 13 mm (0.5 in).

What is the best time to visit George Town?

Judging by long-term averages, the most comfortable months are November–May.

About this data

All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.

Sources and method