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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January in Jalthara, Sri Lanka, is a hot winter month, with an average temperature ranging between max 30.8°C (87.4°F) and min 23.1°C (73.6°F). January's onset sees an average high-temperature of a hot 30.8°C (87.4°F), exhibiting a slight fluctuation from the previous month. Weather in January »
Weather in February
February, the last month of the winter in Jalthara, is another tropical month, with an average temperature ranging between max 31.4°C (88.5°F) and min 23.3°C (73.9°F). February records an average high-temperature of a still tropical 31.4°C (88.5°F), indicating a minor variation from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is also a hot month in Jalthara, Sri Lanka, with an average temperature ranging between min 24.3°C (75.7°F) and max 31.8°C (89.2°F). Jalthara witnesses its highest average temperatures during March and April, peaking at 31.8°C (89.2°F). March's average heat index is estimated at a blisteringly hot 42°C (107.6°F). Weather in March »
Weather in April
April, like March, is another hot spring month in Jalthara, Sri Lanka, with an average temperature fluctuating between 31.8°C (89.2°F) and 25.8°C (78.4°F). March and April represent the warmest period, with an average high-temperature of 31.8°C (89.2°F). The heat index value during April is estimated at an extremely hot 42°C (107.6°F). Weather in April »
Weather in May
The last month of the spring, May, is another tropical month in Jalthara, Sri Lanka, with an average temperature fluctuating between 30.6°C (87.1°F) and 26.3°C (79.3°F). As May takes its course, Jalthara's average high-temperature registers at a still tropical 30.6°C (87.1°F), closely aligning with the preceding month. Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Jalthara, Sri Lanka, with an average temperature varying between 29.3°C (84.7°F) and 25.8°C (78.4°F). With the advent of June, Jalthara experiences an average high-temperature of a moderately hot 29.3°C (84.7°F), mirroring a close resemblance to the previous month. Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Jalthara, Sri Lanka, with an average temperature fluctuating between 25.3°C (77.5°F) and 28.9°C (84°F). Jalthara sees its lowest temperatures during July and August, with an average high-temperature of 28.9°C (84°F). During July, the heat index is estimated at a fiery hot 35°C (95°F). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Jalthara, Sri Lanka, with an average temperature fluctuating between 28.9°C (84°F) and 25.2°C (77.4°F). Jalthara witnesses its lowest temperatures during July and August, when the average high-temperature reaches 28.9°C (84°F). August's heat index is estimated at a fiery hot 35°C (95°F). Weather in August »
Weather in September
September, the first month of the autumn in Jalthara, is still a warm month, with temperature in the range of an average high of 29.1°C (84.4°F) and an average low of 24.9°C (76.8°F). As Jalthara transitions into September, the average high-temperature stands at a still warm 29.1°C (84.4°F), offering little variation from the preceding month. Weather in September »
Weather in October
October is a hot autumn month in Jalthara, Sri Lanka, with temperature in the range of an average high of 30°C (86°F) and an average low of 25°C (77°F). On the advent of October, Jalthara's average high-temperature exhibits a minor adjustment to a tropical 30°C (86°F) from September's 29.1°C (84.4°F). Weather in October »
Weather in November
The last month of the autumn, November, is also a hot month in Jalthara, Sri Lanka, with temperature in the range of an average low of 24.5°C (76.1°F) and an average high of 30.1°C (86.2°F). November's weather displays an average high-temperature of a still hot 30.1°C (86.2°F), slightly varied from October's 30°C (86°F). Weather in November »
Weather in December
The first month of the winter, December, is also a moderately hot month in Jalthara, Sri Lanka, with an average temperature fluctuating between 29.9°C (85.8°F) and 23.7°C (74.7°F). Jalthara's entry into December measures an average high-temperature of a warm 29.9°C (85.8°F), closely parallel to the preceding month. Weather in December »
Updated: Feb 6, 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
What is the least humid month in Jalthara?
The months with the lowest humidity in Jalthara, Sri Lanka, are January and February, with an average relative humidity of 74%.
What is the driest month in Jalthara?
January is the month with the least rainfall in Jalthara. Rain falls for 11.6 days and accumulates 40mm (1.57") of precipitation.
How many days does it rain in Jalthara?
Throughout the year, in Jalthara, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.
What month has the most sunshine in Jalthara?
The month with the most sunshine is January, with an average of 9.1h of sunshine.
What are the months with the highest UV index in Jalthara?
January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Jalthara, Sri Lanka.
What time of the year is the hottest in Jalthara?
Jalthara's warmest months, March and April, record an average high-temperature of 31.8°C (89.2°F).
When is the lowest UV index in Jalthara?
May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index in Jalthara, Sri Lanka.
What are the most humid months in Jalthara?
June through August, with an average relative humidity of 83%, are most humid months in Jalthara, Sri Lanka.
What is the rainiest month in Jalthara?
The month with the most rainfall is June, when the rain falls for 29.3 days and typically aggregates up to 341mm (13.43") of precipitation.
When are the longest days in Jalthara?
With an average of 12h and 30min of daylight, June has the longest days of the year.
What are the coldest months in Jalthara?
The coldest period in Jalthara, with an average high-temperature of 28.9°C (84°F), falls in July and August.
What is the month with the least sunshine in Jalthara?
With an average of 6.7h of sunshine, November has the least sunshine of the year in Jalthara.
What is the month with the shortest days in Jalthara?
December has the shortest days of the year, with an average of 11h and 42min of daylight.
Is there Daylight Saving Time (DST) in Jalthara?
Jalthara does not utilize Daylight Saving Time (DST). +0530 timezone is used throughout the entire year.
Average temperature
Jalthara, Sri Lanka
The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).
The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).
Average pressure
Jalthara, Sri Lanka
- Average pressure in January:
1011.6mbar - Average pressure in February:
1011.3mbar - Average pressure in March:
1010.7mbar - Average pressure in April:
1009.7mbar - Average pressure in May:
1008.6mbar - Average pressure in June:
1008.7mbar
- Average pressure in July:
1008.7mbar - Average pressure in August:
1009.1mbar - Average pressure in September:
1009.8mbar - Average pressure in October:
1009.9mbar - Average pressure in November:
1009.8mbar - Average pressure in December:
1010.4mbar
The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed
Jalthara, Sri Lanka
- Average wind speed in January:
12.8km/h - Average wind speed in February:
9.9km/h - Average wind speed in March:
8km/h - Average wind speed in April:
8.6km/h - Average wind speed in May:
12.9km/h - Average wind speed in June:
15.1km/h
- Average wind speed in July:
14.1km/h - Average wind speed in August:
14.2km/h - Average wind speed in September:
13.2km/h - Average wind speed in October:
10.2km/h - Average wind speed in November:
8.9km/h - Average wind speed in December:
11.5km/h
The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).
Average humidity
Jalthara, Sri Lanka
The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall
Jalthara, Sri Lanka
- Average rainfall in January:
40mm - Average rainfall in February:
47mm - Average rainfall in March:
66mm - Average rainfall in April:
137mm - Average rainfall in May:
306mm - Average rainfall in June:
341mm
- Average rainfall in July:
256mm - Average rainfall in August:
287mm - Average rainfall in September:
206mm - Average rainfall in October:
237mm - Average rainfall in November:
191mm - Average rainfall in December:
148mm
The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).
Average rainfall days
Jalthara, Sri Lanka
- Average rainfall days in January:
11.6 days - Average rainfall days in February:
13.8 days - Average rainfall days in March:
19.8 days - Average rainfall days in April:
25.4 days - Average rainfall days in May:
28.8 days - Average rainfall days in June:
29.3 days
- Average rainfall days in July:
29.8 days - Average rainfall days in August:
30.2 days - Average rainfall days in September:
26.9 days - Average rainfall days in October:
27 days - Average rainfall days in November:
25.7 days - Average rainfall days in December:
21.1 days
The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).
Average daylight / Average sunshine
Jalthara, Sri Lanka
- Average daylight in January:
11h and 5min - Average daylight in February:
11h and 5min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 2min - Average daylight in May:
12h and 2min - Average daylight in June:
12h and 3min
- Average daylight in July:
12h and 3min - Average daylight in August:
12h and 2min - Average daylight in September:
12h and 1min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 5min - Average daylight in December:
11h and 4min
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 42min).
- Average sunshine in January:
9h and 1min - Average sunshine in February:
9h and 0min - Average sunshine in March:
9h and 0min - Average sunshine in April:
8h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
8h and 0min
- Average sunshine in July:
7h and 4min - Average sunshine in August:
7h and 0min - Average sunshine in September:
7h and 2min - Average sunshine in October:
7h and 4min - Average sunshine in November:
6h and 4min - Average sunshine in December:
6h and 5min
The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days
Jalthara, Sri Lanka
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
12.7 days - Average sunshine days in March:
8.2 days - Average sunshine days in April:
2.6 days - Average sunshine days in May:
1.3 days - Average sunshine days in June:
0.3 days
- Average sunshine days in July:
0.4 days - Average sunshine days in August:
0.3 days - Average sunshine days in September:
1.5 days - Average sunshine days in October:
1.7 days - Average sunshine days in November:
3.6 days - Average sunshine days in December:
8.3 days
The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).
Average UV index
Jalthara, Sri Lanka
The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).
Average cloud cover
Jalthara, Sri Lanka
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility
Jalthara, Sri Lanka
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
