Climate and monthly weather forecastIssano, Guyana
Climate and monthly weather forecast
Weather in January
January, like December, in Issano, Guyana, is another warm winter month, with an average temperature fluctuating between 27.4°C (81.3°F) and 17.8°C (64°F). Issano marks the onset of January with an average high-temperature of a still warm 27.4°C (81.3°F), a subtle shift from December's 27.3°C (81.1°F). Weather in January »Weather in February
The last month of the winter, February, is another warm month in Issano, Guyana, with an average temperature ranging between max 27.3°C (81.1°F) and min 18.2°C (64.8°F). February, June and December bring Issano's lowest average temperatures, reaching a high of 27.3°C (81.1°F). For February, the heat index is estimated at a tropical 31°C (87.8°F). Weather in February »Weather in March
March, the first month of the spring in Issano, is still a warm month, with an average temperature ranging between min 18.3°C (64.9°F) and max 28.6°C (83.5°F). The average high-temperature for March is a still moderately hot 28.6°C (83.5°F), closely aligning with the temperature of the preceding month. Weather in March »Weather in April
April, like March, in Issano, Guyana, is a moderately hot spring month, with temperature in the range of an average low of 18.7°C (65.7°F) and an average high of 28.8°C (83.8°F). The dawn of April sees an average high-temperature of a still moderately hot 28.8°C (83.8°F), subtly contrasting with March's 28.6°C (83.5°F). Weather in April »Weather in May
May, the last month of the spring in Issano, is also a moderately hot month, with an average temperature fluctuating between 27.8°C (82°F) and 18.9°C (66°F). Issano, Guyana, experiences a recorded average high-temperature of a still moderately hot 27.8°C (82°F) in May, closely aligned with April's 28.8°C (83.8°F). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Issano, Guyana, with temperature in the range of an average high of 27.3°C (81.1°F) and an average low of 18.7°C (65.7°F). The yearly lowest temperatures occur in February, June and December, averaging a high-temperature of 27.3°C (81.1°F). The average heat index in June is estimated at a tropical 31°C (87.8°F). Weather in June »Weather in July
July, like June, in Issano, Guyana, is a moderately hot summer month, with an average temperature ranging between max 27.8°C (82°F) and min 18.1°C (64.6°F). As July takes its course, Issano's average high-temperature registers at a still moderately hot 27.8°C (82°F), closely aligning with the preceding month. Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Issano, Guyana, with an average temperature varying between 28.8°C (83.8°F) and 18°C (64.4°F). The average high-temperature during August is a still moderately hot 28.8°C (83.8°F), almost matching the conditions of the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Issano, is still a warm month, with an average temperature ranging between max 29.6°C (85.3°F) and min 18.2°C (64.8°F). Welcoming September, Issano notes an average high-temperature of a still warm 29.6°C (85.3°F), nearly consistent with August's 28.8°C (83.8°F). Weather in September »Weather in October
October, like September, in Issano, Guyana, is a moderately hot autumn month, with an average temperature varying between 29.7°C (85.5°F) and 18.3°C (64.9°F). Issano reaches its highest average temperatures in October, measuring 29.7°C (85.5°F) at the peak and 18.3°C (64.9°F) at the lowest. In October, the average heat index is estimated at a very hot 38°C (100.4°F). Weather in October »Weather in November
The last month of the autumn, November, is also a moderately hot month in Issano, Guyana, with an average temperature varying between 18.7°C (65.7°F) and 28.5°C (83.3°F). The commencement of November notes an average high-temperature of a still warm 28.5°C (83.3°F), exhibiting little difference from the previous month. Weather in November »Weather in December
December, the first month of the winter in Issano, is also a moderately hot month, with an average temperature ranging between min 18.3°C (64.9°F) and max 27.3°C (81.1°F). February, June and December bring Issano's lowest average temperatures, reaching a high of 27.3°C (81.1°F). December's heat index is estimated at a hot 31°C (87.8°F). Weather in December »Updated: Feb 19, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, in Issano, Guyana, there are 310.6 rainfall days, and 1432mm (56.38") of precipitation is accumulated.
January, February and December, with an average maximum UV index of 5, are months with the lowest UV index in Issano, Guyana.
During February, June and December, Issano experiences its coldest period, with an average high-temperature of 27.3°C (81.1°F).
March, April, September and October, with an average relative humidity of 83%, are the least humid months.
March is the month with the least rainfall in Issano. Rain falls for 21.8 days and accumulates 38mm (1.5") of precipitation.
March through November, with an average maximum UV index of 6, are months with the highest UV index in Issano.
The months with the highest humidity in Issano, Guyana, are June and July, with an average relative humidity of 89%.
The month with the longest days in Issano, Guyana, is June, with an average of 12h and 30min of daylight.
The month with the most rainfall in Issano, Guyana, is July, when the rain falls for 30.3 days and typically aggregates up to 237mm (9.33") of precipitation.
September has the most sunshine of the year in Issano, Guyana, with an average of 9.8h of sunshine.
October is the month that records the highest temperatures in Issano, Guyana, with averages ranging from a high of 29.7°C (85.5°F) to a low of 18.3°C (64.9°F).
With an average of 11h and 48min of daylight, December has the shortest days of the year.
Issano, Guyana, does not observe Daylight Saving Time (DST). -04 timezone is used throughout the entire year.
The month with the least sunshine in Issano is December, with an average of 5.2h of sunshine.
Average temperature
Issano, Guyana
The warmest month (with the highest average high temperature) is October (29.7°C).
The months with the lowest average high temperature are February, June and December (27.3°C).
The month with the highest average low temperature is May (18.9°C).
The coldest month (with the lowest average low temperature) is January (17.8°C).
Average pressure
Issano, Guyana
- Average pressure in January:
1013.5mbar - Average pressure in February:
1013.3mbar - Average pressure in March:
1013.1mbar - Average pressure in April:
1013.2mbar - Average pressure in May:
1013.6mbar - Average pressure in June:
1014.4mbar
- Average pressure in July:
1014.3mbar - Average pressure in August:
1013.7mbar - Average pressure in September:
1013mbar - Average pressure in October:
1011.6mbar - Average pressure in November:
1011mbar - Average pressure in December:
1012.4mbar
The month with the highest atmospheric pressure is June (1014.4mbar).
The month with the lowest atmospheric pressure is November (1011mbar).
Average wind speed
Issano, Guyana
- Average wind speed in January:
4.2km/h - Average wind speed in February:
4.7km/h - Average wind speed in March:
5.2km/h - Average wind speed in April:
5.1km/h - Average wind speed in May:
4.7km/h - Average wind speed in June:
4.2km/h
- Average wind speed in July:
4km/h - Average wind speed in August:
4km/h - Average wind speed in September:
4.2km/h - Average wind speed in October:
4.2km/h - Average wind speed in November:
4km/h - Average wind speed in December:
4km/h
The windiest month (with the highest average wind speed) is March (5.2km/h).
The calmest months (with the lowest average wind speed) are July, August, November and December (4km/h).
Average humidity
Issano, Guyana
The months with the highest relative humidity are June and July (89%).
The months with the lowest relative humidity are March, April, September and October (83%).
Average rainfall
Issano, Guyana
- Average rainfall in January:
41mm - Average rainfall in February:
44mm - Average rainfall in March:
38mm - Average rainfall in April:
70mm - Average rainfall in May:
140mm - Average rainfall in June:
170mm
- Average rainfall in July:
237mm - Average rainfall in August:
224mm - Average rainfall in September:
139mm - Average rainfall in October:
130mm - Average rainfall in November:
123mm - Average rainfall in December:
76mm
The wettest month (with the highest rainfall) is July (237mm).
The driest month (with the least rainfall) is March (38mm).
Average rainfall days
Issano, Guyana
- Average rainfall days in January:
21.9 days - Average rainfall days in February:
23.2 days - Average rainfall days in March:
21.8 days - Average rainfall days in April:
23.1 days - Average rainfall days in May:
28 days - Average rainfall days in June:
27.8 days
- Average rainfall days in July:
30.3 days - Average rainfall days in August:
30.3 days - Average rainfall days in September:
27.4 days - Average rainfall days in October:
25.7 days - Average rainfall days in November:
24.5 days - Average rainfall days in December:
26.6 days
The months with the highest number of rainy days are July and August (30.3 days).
The month with the least rainy days is March (21.8 days).
Average daylight / Average sunshine
Issano, Guyana
- Average daylight in January:
11h and 48min - Average daylight in February:
11h and 54min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 18min - Average daylight in May:
12h and 24min - Average daylight in June:
12h and 30min
- Average daylight in July:
12h and 24min - Average daylight in August:
12h and 18min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 54min - Average daylight in December:
11h and 48min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in January:
5h and 54min - Average sunshine in February:
5h and 24min - Average sunshine in March:
6h and 24min - Average sunshine in April:
7h and 12min - Average sunshine in May:
6h and 18min - Average sunshine in June:
6h and 24min
- Average sunshine in July:
7h and 42min - Average sunshine in August:
9h and 18min - Average sunshine in September:
9h and 48min - Average sunshine in October:
8h and 30min - Average sunshine in November:
7h and 18min - Average sunshine in December:
5h and 12min
The month with the most sunshine is September (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days
Issano, Guyana
- Average sunshine days in January:
6.1 days - Average sunshine days in February:
3.8 days - Average sunshine days in March:
6.6 days - Average sunshine days in April:
5.1 days - Average sunshine days in May:
2.2 days - Average sunshine days in June:
1.4 days
- Average sunshine days in July:
0.3 days - Average sunshine days in August:
0.4 days - Average sunshine days in September:
1.6 days - Average sunshine days in October:
3.8 days - Average sunshine days in November:
4.2 days - Average sunshine days in December:
3.3 days
The month with the most sunshine days is March (6.6 days).
The month with the least sunshine days is July (0.3 days).
Average UV index
Issano, Guyana
The months with the highest UV index are March, April, May, June, July, August, September, October and November (UV index 6).
The months with the lowest UV index are January, February and December (UV index 5).
Average cloud cover
Issano, Guyana
The month with the most cloud cover is February (Cloud cover 76).
The month with the least cloud cover is September (Cloud cover 50).
Average visibility
Issano, Guyana
The months with the highest visibility are March, August, September and October (7km).
The months with the lowest visibility are January, February, April, May, June, July, November and December (6km).
