Vatican City, being an urban city-state, has a mild Mediterranean climate. The weather is generally mild and humid, with temperatures ranging from 3-17°C (37-63°F) in the winter and 15-32°C (59-90°F) in the summer.
The pollen season in Vatican City is relatively short, typically lasting from late February to May. The most common pollen-producing plants are grasses, olive trees, and cypress trees.
The city's location in a valley surrounded by mountains can cause localized weather patterns, leading to occasional rain showers and thunderstorms, which can temporarily reduce pollen levels. However, the close proximity of the city to the Mediterranean Sea and its influence on the climate can also lead to higher pollen counts.
When pollen counts are high, we suggest doing these things to help with allergies, especially on windy days when pollen is flying around.