Climate - Celje (Slovenia)
Average weather, temperature, rainfall, sunshine hours
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Climate chart - Celje
The climate of Celje is moderately continental, with cold winters and quite warm summers.
The city is located in the central-eastern part of Slovenia, at an altitude of 240 meters (785 feet).
Precipitation is abundant, and although winter is the driest season, there can sometimes be heavy snowfalls. During the most intense cold spells, the temperature can drop to -20 °C (-4 °F) or even below. The cold record is -24 °C (-11 °F), set in January 2003.
Summer is quite warm, with nights usually cool. The sun shines quite often, although thunderstorms can break out, even of strong intensity. Sometimes there can be very hot periods, during which the temperature can reach or exceed 35 °C (95 °F). The heat record is 39.7 °C (103.5 °F), set in August 2013.
Best Time
The best times to visit Celje are spring and autumn, and in particular, the months of May, June and September: daytime temperatures are pleasant, although it's better to bring a sweater and a jacket for the evening. In July and August, the temperature is usually not too hot, however, there is the risk of some very hot days, which can happen, though more rarely, also in the second half of June and in the first half of September.
Celje - Climate data
In Celje, the average temperature of the coldest month (January) is of 0.6 °C (33.0 °F), that of the warmest month (July) is of 21.5 °C (70.8 °F). Here are the average temperatures.Celje - Average temperatures (2009-2020) | Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
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| January | -3.8 | 4.9 | 0.6 | 25 | 41 | 33 |
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| February | -2.6 | 7 | 2.2 | 27 | 45 | 36 |
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| March | 0.4 | 12.8 | 6.6 | 33 | 55 | 43.9 |
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| April | 5.2 | 18.4 | 11.8 | 41 | 65 | 53.2 |
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| May | 9.2 | 21.7 | 15.5 | 49 | 71 | 59.9 |
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| June | 13 | 26.2 | 19.6 | 55 | 79 | 67.3 |
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| July | 14.8 | 28.3 | 21.5 | 59 | 83 | 70.8 |
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| August | 14 | 28.1 | 21.1 | 57 | 83 | 69.9 |
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| September | 10.6 | 22.4 | 16.5 | 51 | 72 | 61.6 |
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| October | 6 | 16.9 | 11.5 | 43 | 62 | 52.7 |
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| November | 3.2 | 11.2 | 7.2 | 38 | 52 | 44.9 |
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| December | -2.7 | 6.5 | 1.9 | 27 | 44 | 35.4 |
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| Year | 5.7 | 17.1 | 11.35 | 42.2 | 62.8 | 52.5 |
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In Celje, precipitation amounts to 1155 millimeters (45.5 inches) per year: it is therefore quite abundant. It ranges from 45 mm (1.8 in) in the driest month (January) to 125 mm (4.9 in) in the wettest one (October). Here is the average precipitation.Celje - Average precipitation| Month | Millimeters | Inches | Days |
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| January | 45 | 1.8 | 6 |
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| February | 60 | 2.4 | 6 |
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| March | 60 | 2.4 | 7 |
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| April | 85 | 3.3 | 9 |
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| May | 110 | 4.3 | 11 |
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| June | 120 | 4.7 | 10 |
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| July | 120 | 4.7 | 9 |
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| August | 120 | 4.7 | 8 |
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| September | 120 | 4.7 | 9 |
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| October | 125 | 4.9 | 8 |
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| November | 110 | 4.3 | 9 |
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| December | 75 | 3 | 8 |
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| Year | 1155 | 45.5 | 101 |
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In Celje, there are on average around 1905 sunshine hours per year. Here are the average hours of sunshine per day.
Celje - Sunshine hours| Month | Average | Total |
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January | 2.5 | 75 | February | 3 | 85 | March | 5 | 150 | April | 6.5 | 190 | May | 6.5 | 205 | June | 8 | 235 | July | 8.5 | 255 | August | 8.5 | 255 | September | 5.5 | 165 | October | 4.5 | 145 | November | 2.5 | 70 | December | 2.5 | 80 | Year | 5.2 | 1905 |
Celje - Weather by month
Based on the period 2009-2020
In January, the coldest month of the year, the weather in Celje is usually cold. The average temperature is of 0.6 °C (33 °F), with a minimum of -3.8 °C (25.2 °F) and a maximum of 4.9 °C (40.8 °F).
On the coldest nights of the month, the temperature usually drops to around -12.5 °C (9.5 °F). However, it dropped to -19.6 °C (-3.3 °F) in January 2017.
On the warmest days of the month, the temperature usually reaches around 13.5 °C (56.5 °F). However, it reached 16.5 °C (61.7 °F) in January 2016.
Precipitation amounts to 45 mm (1.8 in), distributed over 6 days.
The day lasts on average 9 hours and 5 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 26% of the time.
The average humidity is 82%. Hence, the air is normally humid.
In February, the weather in Celje is usually cold. The average temperature is of 2.2 °C (36 °F), with a minimum of -2.6 °C (27.4 °F) and a maximum of 7 °C (44.6 °F).
On the coldest nights of the month, the temperature usually drops to around -11.5 °C (11.5 °F). However, it dropped to -21.6 °C (-6.9 °F) in February 2018.
On the warmest days of the month, the temperature usually reaches around 16 °C (60.5 °F). However, it reached 21.4 °C (70.5 °F) in February 2019.
Precipitation amounts to 60 mm (2.4 in), distributed over 6 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 79%. Hence, the air is normally humid.
In March, the weather in Celje is usually quite mild. The average temperature is of 6.6 °C (44 °F), with a minimum of 0.4 °C (32.8 °F) and a maximum of 12.8 °C (55.1 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -7.5 °C (19 °F). However, it dropped to -20.3 °C (-4.5 °F) in March 2018.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 20.5 °C (68.5 °F). However, it reached 24.9 °C (76.8 °F) in March 2014.
Precipitation amounts to 60 mm (2.4 in), distributed over 7 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 75%. Hence, the air is normally humid.
In April, the weather in Celje is usually mild. However, there are remarkable differences between night and day. The average temperature is of 11.8 °C (53 °F), with a minimum of 5.2 °C (41.3 °F) and a maximum of 18.4 °C (65.1 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -1.5 °C (29.5 °F). However, it dropped to -6.3 °C (20.7 °F) in April 2020.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 26 °C (79 °F). However, it reached 28.8 °C (83.8 °F) in April 2018.
Precipitation amounts to 85 mm (3.3 in), distributed over 9 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 72%. Hence, the air is normally humid.
In May, the weather in Celje is usually very mild. The average temperature is of 15.5 °C (60 °F), with a minimum of 9.2 °C (48.6 °F) and a maximum of 21.7 °C (71.1 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 3 °C (37 °F). However, it dropped to -1.1 °C (30 °F) in May 2019.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 29 °C (84 °F). However, it reached 31 °C (87.8 °F) in May 2009.
Precipitation amounts to 110 mm (4.3 in), distributed over 11 days.
The day lasts on average 15 hours and 0 minutes. So the days are long.
There are on average 6.5 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 74%. Hence, the air is normally humid.
In June, the weather in Celje is usually warm. However, there are remarkable differences between night and day. The average temperature is of 19.6 °C (67 °F), with a minimum of 13 °C (55.4 °F) and a maximum of 26.2 °C (79.1 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 7.5 °C (45.5 °F). However, it dropped to 5.9 °C (42.6 °F) in June 2012.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 32.5 °C (91 °F). However, it reached 35.8 °C (96.4 °F) in June 2019.
Precipitation amounts to 120 mm (4.7 in), distributed over 10 days.
The day lasts on average 15 hours and 40 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 8 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 76%. Hence, the air is normally humid.
In July, the warmest month of the year, the weather in Celje is usually warm. However, there are remarkable differences between night and day. The average temperature is of 21.5 °C (71 °F), with a minimum of 14.8 °C (58.6 °F) and a maximum of 28.3 °C (83 °F).
On the coldest nights of the month, the temperature usually drops to around 9 °C (48.5 °F). However, it dropped to 6.6 °C (43.9 °F) in July 2011.
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F). However, it reached 36.5 °C (97.7 °F) in July 2013.
Precipitation amounts to 120 mm (4.7 in), distributed over 9 days.
The day lasts on average 15 hours and 20 minutes. So the days are long.
There are on average 8.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 76%. Hence, the air is normally humid.
In August, the weather in Celje is usually warm. However, there are remarkable differences between night and day. The average temperature is of 21.1 °C (70 °F), with a minimum of 14 °C (57.2 °F) and a maximum of 28.1 °C (82.7 °F).
On the coldest nights of the month, the temperature usually drops to around 7.5 °C (45.5 °F). However, it dropped to 4.2 °C (39.6 °F) in August 2010.
On the warmest days of the month, the temperature usually reaches around 34.5 °C (93.5 °F). However, it reached 39.7 °C (103.5 °F) in August 2013.
Precipitation amounts to 120 mm (4.7 in), distributed over 8 days.
The day lasts on average 14 hours and 5 minutes. So the days are long.
There are on average 8.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 79%. Hence, the air is normally humid.
In September, the weather in Celje is usually very mild. The average temperature is of 16.5 °C (62 °F), with a minimum of 10.6 °C (51 °F) and a maximum of 22.4 °C (72.3 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 4 °C (39 °F). However, it dropped to -0.3 °C (31.5 °F) in September 2018.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 29 °C (84.5 °F). However, it reached 33.2 °C (91.8 °F) in September 2011.
Precipitation amounts to 120 mm (4.7 in), distributed over 9 days.
The day lasts on average 12 hours and 30 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 82%. Hence, the air is normally humid.
In October, the weather in Celje is usually mild. The average temperature is of 11.5 °C (53 °F), with a minimum of 6 °C (42.8 °F) and a maximum of 16.9 °C (62.5 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -1.5 °C (29 °F). However, it dropped to -4.5 °C (23.9 °F) in October 2011.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 23.5 °C (74.5 °F). However, it reached 26 °C (78.8 °F) in October 2011.
Precipitation amounts to 125 mm (4.9 in), distributed over 8 days.
The day lasts on average 10 hours and 55 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 83%. Hence, the air is normally humid.
In November, the weather in Celje is usually quite mild. The average temperature is of 7.2 °C (45 °F), with a minimum of 3.2 °C (37.7 °F) and a maximum of 11.2 °C (52.2 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -4 °C (24.5 °F). However, it dropped to -7.5 °C (18.5 °F) in November 2016.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 19 °C (66.5 °F). However, it reached 22 °C (71.6 °F) in November 2015.
Precipitation amounts to 110 mm (4.3 in), distributed over 9 days.
The day lasts on average 9 hours and 25 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 25% of the time.
The average humidity is 83%. Hence, the air is normally humid.
In December, the weather in Celje is usually cold. The average temperature is of 1.9 °C (35 °F), with a minimum of -2.7 °C (27.1 °F) and a maximum of 6.5 °C (43.7 °F).
On the coldest nights of the month, the temperature usually drops to around -13.5 °C (7.5 °F). However, it dropped to -21 °C (-5.8 °F) in December 2009.
On the warmest days of the month, the temperature usually reaches around 15 °C (59 °F). However, it reached 17.3 °C (63.1 °F) in December 2019.
Precipitation amounts to 75 mm (3 in), distributed over 8 days.
The day lasts on average 8 hours and 40 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 2.5 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 83%. Hence, the air is normally humid.
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