The town management cooperates with the observatory in controlling and shielding street lights and outside illumination to minimize the additional light background, but in the last few years together with a large development of the town, the light pollution from the town has increased considerably. The number of useful nights is about 240. The best season, when practically no clouds are observed, is June to August, while the highest chance for clouds are in the period January to April. Winds are usually moderate mainly from North-East and North. The wind speed tends to decrease during the night.
Temperature gradients are small and fairly moderate.
The average relative humidity is quite high with a tendency to decline during the night from April to August. The average seeing is about 2-3 seconds of arc. These are median values for the last decade.