September weather forecast
Larissa, Greece

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The ancient amphitheater in the city of Larissa in central Greece
The ancient amphitheater in the city of Larissa in central Greece

Weather in September

September marks a relief from the intensive heat, offering transition from summer to fall. The onset of cooler weather is marked by a decreased number of daylight hours. Relative humidity tends to increase, and the UV index decreases, allowing more comfortable outdoor activities. A decline in the maximum temperature to 28.6°C (83.5°F) and a fall in minimum to 14.4°C (57.9°F) is noted, as the days become perceptibly cooler. Owing to the reduced heat, rainfall gradually increases, though the rainfall days still remain noticeably few.

Temperature

The onset of September in Larissa entails a subtle temperature shift, as the average high-temperature eases from a hot 32.9°C (91.2°F) in August to a warm 28.6°C (83.5°F). From significant daily highs, Larissa's nights in September cool down to an average low-temperature of 14.4°C (57.9°F).

Heat index

The average heat index in September is calculated to be a tropical 30°C (86°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In Larissa, Greece, the average relative humidity in September is 58.6%.

Rainfall

September is the month with the least rainfall. Rain falls for 2 days and accumulates 13mm (0.51") of precipitation.

Daylight

In September, the average length of the day is 12h and 27min.
On the first day of September, sunrise is at 06:58 and sunset at 20:01. On the last day of the month, sunrise is at 07:25 and sunset at 19:14 EEST.

Sunshine

In Larissa, the average sunshine in September is 8.3h.

UV index

In September, the average daily maximum UV index in Larissa is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 6 during September leads to these instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Frequently asked questions

Is it hot in Larissa during September?

In September, the average high-temperature and low-temperature in Larissa are 28.6°C (83.5°F) and 14.4°C (57.9°F) respectively. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 30°C (86°F).

What is the average humidity in September in Larissa?

In Larissa, the average relative humidity in September is 58.6%.

What is the driest month in Larissa?

The month with the least rainfall in Larissa, Greece, is September, when the rain falls for 2 days and typically collects 13mm (0.51") of precipitation.

How many days does it rain in September in Larissa?

In September, the rain falls for 2 days. Throughout September, 13mm (0.51") of precipitation is accumulated.

How many hours of daylight does Larissa have in September?

In September, the average day length in Larissa is 12h and 27min.

When is the sunrise / sunset in September in Larissa?

On the first day of September, sunrise is at 06:58 and sunset at 20:01. On the last day of the month, sunrise is at 07:25 and sunset at 19:14 EEST.

How many hours of sunshine does Larissa have in September?

In Larissa, Greece, the average sunshine duration in September is 8.3h.

How high is the UV index in September in Larissa?

In Larissa, Greece, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Larissa, Greece

Average temperature in September - Larissa, Greece
  • Average high temperature in September: 28.6°C

The warmest month (with the highest average high temperature) is July (33.4°C).
The month with the lowest average high temperature is January (10.2°C).

  • Average low temperature in September: 14.4°C

The month with the highest average low temperature is July (18.5°C).
The coldest month (with the lowest average low temperature) is January (0.7°C).

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Average humidity in September
Larissa, Greece

Average humidity in September - Larissa, Greece
  • Average humidity in September: 58.6%

The month with the highest relative humidity is December (82.5%).
The month with the lowest relative humidity is July (46.4%).

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Average rainfall in September
Larissa, Greece

Average rainfall in September - Larissa, Greece
  • Average rainfall in September: 12.9mm

The wettest month (with the highest rainfall) is November (67.4mm).
The driest month (with the least rainfall) is September (12.9mm).

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Average rainfall days in September
Larissa, Greece

Average rainfall days in September - Larissa, Greece
  • Average rainfall days in September: 2 days

The months with the highest number of rainy days are November and December (7 days).
The months with the least rainy days are July, August and September (2 days).

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Average daylight in September /
Average sunshine in September
Larissa, Greece

Average daylight in September / Average sunshine in September - Larissa, Greece
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).

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Average UV index in September
Larissa, Greece

Average UV index in September - Larissa, Greece
  • Average UV index in September: 6

The months with the highest UV index are June and July (UV index 9).
The months with the lowest UV index are January, November and December (UV index 2).

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Larissa, Greece

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