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Trastevere Weather in September
Trastevere, Rome, Italy
About Trastevere in September
Trastevere's position on the west bank of the Tiber at the foot of the Janiculum Hill creates a humid microclimate where morning river fog lingers longer than in elevated neighborhoods. The Janiculum's bulk blocks prevailing westerly breezes, leaving Trastevere's narrow medieval alleys poorly ventilated during summer heat waves.
For detailed monthly temperature and rainfall data for Rome in September, see the Rome September weather guide.