Tehran Weather in October
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Updated: March 2026
Is October a Good Time to Visit Tehran?
October is a excellent time to visit Tehran (8/10). With 10 daily sunshine hours and only 4 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 8th sunniest of the year in Tehran. Beach and outdoor-focused visitors will find October ideal, though hotel prices reflect demand and popular sites get crowded by mid-morning. November offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Tehran's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: book accommodation at least 6-8 weeks ahead, as popular hotels fill quickly during October. Purchasing skip-the-line tickets for major attractions in advance saves meaningful time. If you have flexibility, arriving a few days before or after peak weekends reduces both crowds and prices noticeably.
Tehran's October climate peaks at 23°C each afternoon before cooling to 12°C overnight. 10 daily sunshine hours and just 4 wet days mean the odds of a fine day are solidly in your favour. It is an excellent window for outdoor itineraries.
23°C
Avg High
12°C
Avg Low
4 days
Rain Days
10h
Sunshine
65%
Humidity
Temperature in Tehran in October
The 11°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Winds are calm at an average 10 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 73°F average high, 54°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature in October
Monthly Precipitation (mm)
What to Wear in Tehran in October
Packing for Tehran in October means dressing for 23°C days and 12°C evenings. A light cotton tee with a casual overshirt works well at 23°C, the overshirt doubles as a layer for air-conditioned venues. Evenings drop 11°C to around 12°C, a notable shift that catches underprepared visitors off guard. Pack a dedicated evening layer. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Tehran's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
Events in Tehran in October
October has no major festivals or public holidays in Tehran, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
What to Pack for Tehran in October
Based on 23°C average highs and 4 rainy days
- Light layers for morning and evening
- Breathable T-shirts and comfortable trousers
- UV-protective sunglasses
- SPF 30+ sunscreen
- Comfortable walking shoes (a second pair lets the first air out overnight)
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Tehran in October
- Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 23°C, the temperature is ideal for extended walking without overheating
- Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
- Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
- Day trip to the surrounding countryside or coastFull day (depart by 8am)October is reliably dry enough for rural day trips without weather risk
- Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
- Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
- Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
- Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningOctober brings distinct seasonal changes to public green spaces worth exploring
- Try the seasonal farmer's market for local produce and street foodSaturday morning markets typically 8am-1pmOctober seasonal produce is at peak availability, offering dishes not found at other times of year
Why is Tehran mild in October?
October brings the first meaningful shift toward cooler conditions in Tehran, as the sun angle drops and day length shortens. Temperatures averaging 23°C by day and 12°C overnight are still comfortable by most standards, but the trend is clearly downward. At 36 degrees north latitude, autumn light has a particular quality: lower in the sky and warmer in tone, it gives the city a photogenic quality quite different from summer. Conditions remain excellent for outdoor activity, and crowds thin compared to the summer peak. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.
Frequently Asked Questions: Tehran in October
October ranks 8th sunniest of the year in Tehran, with an average 10 daily sunshine hours. The driest months are July, August, and September. July is the hottest month (36°C avg high); January is the coolest (6°C). From here, temperatures fall 9°C into November. Compared to last month (September: 30°C high, 1 rain days), October is cooler and wetter. October sits in the middle of the annual sunshine ranking for Tehran, offering a reasonable balance of good weather and manageable crowds.
Year-Round Climate
Plan Your Trip to Tehran
Data Sources for Tehran
Climate normals represent 30-year averages (1991-2020). Individual years may vary.