The Sultans Trail from Sofia to Istanbul spans diverse geographical regions, offering a variety of weather conditions. Starting in the capital of Bulgaria, Sofia, the trail through Bulgaria generally experiences cooler spring temperatures, with average highs ranging from 12°C to 20°C and lows from 1°C to 8°C. The weather is quite variable, with occasional sunny days but also regular instances of rain, including moderate or heavy showers, especially in mountainous or elevated areas.
As you proceed into Turkey, the climate gradually becomes warmer and somewhat more stable. In the Turkish regions leading to Istanbul, average temperatures tend to rise, with highs typically between 19°C and 23°C and lows ranging from 10°C to 16°C. The likelihood of sunny and partly cloudy days increases significantly, although there remain chances of rain showers or patchy rain, particularly closer to coastal areas and during transitional weather periods.
Overall, the route exhibits typical spring conditions with a mix of sunny and rainy days, mild temperatures, and occasional shifts in weather patterns as you travel from the more varied climate of Bulgaria into the generally warmer and clearer conditions of northern Turkey towards Istanbul.
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