October weather forecastGrantham, Jamaica
October
Weather in October
October, like September, is another hot autumn month in Grantham, Jamaica, with temperature in the range of an average low of 23.1°C (73.6°F) and an average high of 30.3°C (86.5°F).Temperature
The advent of October denotes an average high-temperature of a still tropical 30.3°C (86.5°F), subtly different from September's 31.4°C (88.5°F). During October, the average low-temperature in Grantham is a moderately hot 23.1°C (73.6°F).Heat index
For October, the heat index is computed to be a fiery hot 39°C (102.2°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
The months with the highest humidity are October through December, with an average relative humidity of 81%.Rainfall
October is the month with the most rainfall in Grantham. Rain falls for 26.5 days and accumulates 123mm (4.84") of precipitation.Daylight
In Grantham, Jamaica, the average length of the day in October is 11h and 44min.On the first day of the month, sunrise is at 05:58 and sunset at 17:55. On the last day of October, sunrise is at 06:06 and sunset at 17:35 EST.
Sunshine
The average sunshine in October is 7.1h.UV index
May through August and October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 7 in October suggests the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Grantham, Jamaica
- Average high temperature in October: 30.3°C
The warmest months (with the highest average high temperature) are July and August (31.7°C).
The month with the lowest average high temperature is January (28.4°C).
- Average low temperature in October: 23.1°C
The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).
Average pressure in October
Grantham, Jamaica
- Average pressure in October: 1011.5mbar
The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is October (1011.5mbar).
Average wind speed in October
Grantham, Jamaica
- Average wind speed in October: 6.7km/h
The windiest month (with the highest average wind speed) is June (9km/h).
The calmest month (with the lowest average wind speed) is November (6.6km/h).
Average humidity in October
Grantham, Jamaica
- Average humidity in October: 81%
The months with the highest relative humidity are October, November and December (81%).
The months with the lowest relative humidity are March, July and August (77%).
Average rainfall in October
Grantham, Jamaica
- Average rainfall in October: 123mm
The wettest month (with the highest rainfall) is October (123mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days in October
Grantham, Jamaica
- Average rainfall days in October: 26.5 days
The month with the highest number of rainy days is October (26.5 days).
The month with the least rainy days is February (19.2 days).
Average daylight in October /
Average sunshine in October
Grantham, Jamaica
- Average daylight in October: 11h and 42min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in October: 7h and 6min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in October
Grantham, Jamaica
- Average sunshine days in October: 1.5 days
The month with the most sunshine days is January (6 days).
The month with the least sunshine days is October (1.5 days).
Average UV index in October
Grantham, Jamaica
- Average UV index in October: 7
The months with the highest UV index are May, June, July, August and October (UV index 7).
The months with the lowest UV index are January, February, March, April, September, November and December (UV index 6).
Average cloud cover in October
Grantham, Jamaica
- Average cloud cover in October: 35
The month with the most cloud cover is June (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in October
Grantham, Jamaica
- Average visibility in October: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
