Weather in Тегеран by month: what to expect

Тегеран sits at the foot of the Alborz Mountains, where the climate shifts noticeably from season to season. Winters here are chilly but short, with January and February bringing the coolest weather, while summers stretch from June to September, offering long, hot, and dry days. Spring and autumn act as gentle transitions, making them some of the most comfortable times to explore the city.

The contrast between day and night temperatures in Тегеран can be striking, especially in the warmer months. Even in July, when afternoons often reach +37.5 °C, evenings cool down enough to make outdoor walks pleasant. Rain is rare in summer, but winter and early spring bring occasional showers, though they rarely disrupt plans for long.

Winter in Тегеран is mild compared to many northern cities, but it still brings a noticeable chill. In January, the coldest month, temperatures hover around +5.7 °C, occasionally dipping to +1.9 °C at night. By March, the air warms up to +13.2 °C, signaling the start of a rapid transition into spring.

Summer arrives in full force by June, with daytime highs climbing to +35.4 °C and peaking at +37.5 °C in July. Nights remain warm, rarely dropping below +25.7 °C, so air conditioning becomes a necessity. The heat lingers into September, though by then, the worst of the summer intensity begins to ease, with temperatures settling around +26.9 °C.

Autumn in Тегеран is brief but pleasant. October sees a sharp drop to +19.6 °C, and by November, the city cools further to +11.9 °C. The shift from summer heat to winter chill happens quickly, so layers are key for travelers visiting during these months.

Rain in Тегеран follows a clear pattern: most of it falls in the cooler months, while summers are almost entirely dry. March is the wettest month, with around 33.8 mm of precipitation, often spread over a few light showers. January and February also see modest rainfall, usually in the form of brief, scattered downpours.

From June to September, rain is a rarity in Тегеран, with August recording just 0.3 mm of precipitation. The dry season aligns with the hottest months, so travelers should prepare for arid conditions. Even in autumn and early winter, rain remains infrequent, with November and December bringing only occasional showers.

Snow is uncommon in Тегеран, but light flurries can occur in the coldest winter weeks, particularly in higher elevations near the city. For most of the year, however, the weather stays dry, making it easier to plan outdoor activities without worrying about sudden downpours.

For a winter trip to Тегеран, pack warm layers, especially for evenings when temperatures can drop near freezing. A good jacket is essential for January and February, along with scarves and gloves for the chilliest days. Comfortable walking shoes are a must, as the city’s terrain includes steep streets and uneven surfaces.

Summer visitors to Тегеран should prioritize lightweight, breathable clothing to cope with the heat. Loose-fitting fabrics, a wide-brimmed hat, and sunglasses will help shield against the strong sun, particularly in July and August. A reusable water bottle is also useful, as staying hydrated is key in the dry summer air.

Spring and autumn in Тегеран call for versatile layers. In April and May, mornings can be cool, while afternoons warm up quickly, so a light jacket or cardigan is ideal. By October, evenings grow cooler again, so packing a mix of short- and long-sleeve options ensures comfort throughout the day.