The climate of Campobasso is temperate, with quite cold winters and warm summers.
The city is the capital of the Molise region and is located in the southern Apennines, 700 meters (2,300 feet) above sea level (although the meteorological station is at 800 meters or 2,600 feet, at the Monforte Castle).
, from December to February, is quite cold, and characterized by sunny periods alternating with rainy periods.
masses from the northeast, which can lead to periods of snow and frost. Snowfalls can also be abundant. On average, about one meter (40 inches) of snow falls per year. Snow can also fall in March, and occasionally even in April.
The coldest record is -11 °C (12 °F), recorded in February 1956, January 1963 and January 1968. On other occasions, the temperature dropped to -10 °C (14 °F) in December 1961, January 1979 and at the end of February 2018. In January 2017, there was a day with a minimum -9 °C (16 °F) and a maximum -8 °C (17.5 °F). A daily maximum of -8 °C (17.5 °F) was also recorded in February 1956, while in January 1963, the maximum was -9 °C (16 °F) for a couple of days.
In March, the temperature dropped to -9.5 °C (15 °F) in 1963, -8 °C (17.5 °F) in 1971, -8.5 °C (16.5 °F) in 1987, and -7.5 °C (18.5 °F) in 2005.
Generally, the heat is not excessive, and definitely more pleasant than in the plains of central-southern Italy, also because the humidity is not high.
Sometimes, however, there can be very hot periods due to the sirocco, which are becoming more frequent due to global warming, and in which the temperature can reach and exceed 35 °C (95 °F). In July 1983, the temperature reached 37.5 °C (99.5 °F), while in July 2023 (when there was one day with a low of 30 °C or 86 °F), it reached 38.2 °C (100.7 °F). In August 2017, there were 7 days with highs of 37/38 °C (98.5/100.5 °F), and the minimum was 28 °C (82.5) for a couple of days.
To visit Campobasso, you can choose the period from mid-May to mid-June and the month of September. In July and August, the heat is generally bearable, but sometimes it can be intense.
. Here are the average temperatures.
January, the coldest month of the year, is generally a quite cold month. The average temperature is of
4.7 °C, with a minimum of
2.2 °C and a maximum of
7.2 °C.

On the coldest nights of the month, the temperature usually drops to around
-3.5 °C. However, it dropped to
-9 °C in January 2017.

On the warmest days of the month, the temperature usually reaches around
14 °C. However, it reached
18 °C in January 2001.

Precipitation amounts to
50 mm, distributed over 7 days.
The day lasts on average 9 hours and 35 minutes.

There are on average 3.5 hours of sunshine per day. So, the sun shines 39% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of
9.8 kph.
February is generally a quite cold month. The average temperature is of
4.8 °C, with a minimum of
2 °C and a maximum of
7.7 °C.

On the coldest nights of the month, the temperature usually drops to around
-4 °C. However, it dropped to
-10 °C in February 2018.

On the warmest days of the month, the temperature usually reaches around
15 °C. However, it reached
20 °C in February 2011.

Precipitation amounts to
55 mm, distributed over 8 days.
The day lasts on average 10 hours and 35 minutes.

There are on average 3.5 hours of sunshine per day. So, the sun shines 33% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
10.5 kph.
March is generally a quite mild month. The average temperature is of
7.7 °C, with a minimum of
4.4 °C and a maximum of
11 °C.

On the coldest nights of the month, the temperature usually drops to around
-2 °C. However, it dropped to
-7.4 °C in March 2005.

On the warmest days of the month, the temperature usually reaches around
19 °C. However, it reached
25.6 °C in March 2001.

Precipitation amounts to
45 mm, distributed over 8 days.
The day lasts on average 12 hours and 0 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
11.2 kph.
April is generally a mild month. The average temperature is of
11 °C, with a minimum of
7.3 °C and a maximum of
14.6 °C.

On the coldest nights of the month, the temperature usually drops to around
1 °C. However, it dropped to
-6 °C in April 2003.

On the warmest days of the month, the temperature usually reaches around
22 °C. However, it reached
27 °C in April 2003.

Precipitation amounts to
50 mm, distributed over 8 days.
The day lasts on average 13 hours and 25 minutes.

There are on average 5.5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 66%.
The average wind speed is of
9.6 kph.
May is generally a very mild month. The average temperature is of
15.4 °C, with a minimum of
11.5 °C and a maximum of
19.3 °C.

On the coldest nights of the month, the temperature usually drops to around
5.5 °C. However, it dropped to
3 °C in May 2019.

On the warmest days of the month, the temperature usually reaches around
26.5 °C. However, it reached
31.2 °C in May 2009.

Precipitation amounts to
45 mm, distributed over 7 days.
The day lasts on average 14 hours and 35 minutes. So the days are long.

There are on average 6.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 65%.
The average wind speed is of
9.1 kph.
June is generally a warm month. The average temperature is of
20.1 °C, with a minimum of
15.9 °C and a maximum of
24.3 °C.

On the coldest nights of the month, the temperature usually drops to around
10 °C. However, it dropped to
5.8 °C in June 2005.

On the warmest days of the month, the temperature usually reaches around
31 °C. However, it reached
35 °C in June 2006.

Precipitation amounts to
35 mm, distributed over 5 days.
The day lasts on average 15 hours and 5 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 52% of the time.
The average humidity is 60%.
The average wind speed is of
8.1 kph.
July is generally a warm to hot month. The average temperature is of
22.9 °C, with a minimum of
18.4 °C and a maximum of
27.3 °C.

On the coldest nights of the month, the temperature usually drops to around
12.5 °C. However, it dropped to
10 °C in July 2000.

On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
37 °C in July 2005.

Precipitation amounts to
30 mm, distributed over 4 days.
The day lasts on average 14 hours and 50 minutes. So the days are long.

There are on average 9 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 55%.
The average wind speed is of
8.4 kph.
August, the warmest month of the year, is generally a warm to hot month. The average temperature is of
23.2 °C, with a minimum of
18.7 °C and a maximum of
27.8 °C.

On the coldest nights of the month, the temperature usually drops to around
13 °C. However, it dropped to
8.4 °C in August 1995.

On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
38.4 °C in August 2017.

Precipitation amounts to
35 mm, distributed over 5 days.
The day lasts on average 13 hours and 50 minutes.

There are on average 8.5 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 57%.
The average wind speed is of
7.2 kph.
September is generally a warm month. The average temperature is of
18.1 °C, with a minimum of
14.4 °C and a maximum of
21.8 °C.

On the coldest nights of the month, the temperature usually drops to around
9 °C. However, it dropped to
5.8 °C in September 2020.

On the warmest days of the month, the temperature usually reaches around
28.5 °C. However, it reached
33.4 °C in September 2011.

Precipitation amounts to
40 mm, distributed over 6 days.
The day lasts on average 12 hours and 25 minutes.

There are on average 7 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 68%.
The average wind speed is of
7.8 kph.
October is generally a mild month. The average temperature is of
14.2 °C, with a minimum of
10.9 °C and a maximum of
17.5 °C.

On the coldest nights of the month, the temperature usually drops to around
4.5 °C. However, it dropped to
-0.8 °C in October 1997.

On the warmest days of the month, the temperature usually reaches around
24.5 °C. However, it reached
27.4 °C in October 2003.

Precipitation amounts to
50 mm, distributed over 7 days.
The day lasts on average 11 hours and 0 minutes.

There are on average 5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
7.9 kph.
November is generally a mild month. The average temperature is of
9.5 °C, with a minimum of
6.9 °C and a maximum of
12.1 °C.

On the coldest nights of the month, the temperature usually drops to around
1 °C. However, it dropped to
-3.4 °C in November 2013.

On the warmest days of the month, the temperature usually reaches around
19.5 °C. However, it reached
25.4 °C in November 2004.

Precipitation amounts to
70 mm, distributed over 9 days.
The day lasts on average 9 hours and 50 minutes.

There are on average 4 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
9.1 kph.
December is generally a quite cold month. The average temperature is of
5.8 °C, with a minimum of
3.5 °C and a maximum of
8.2 °C.

On the coldest nights of the month, the temperature usually drops to around
-2.5 °C. However, it dropped to
-8 °C in December 2014.

On the warmest days of the month, the temperature usually reaches around
14.5 °C. However, it reached
19 °C in December 2000.

Precipitation amounts to
55 mm, distributed over 8 days.
The day lasts on average 9 hours and 10 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.

There are on average 3.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of
9.8 kph.