Azerbaijan Baku Weather in September — Climate Guide
September in Baku is very-high
September is very-high for Baku.
September is one of Baku's best months — the summer heat softens to a warm, pleasant 27°C/19°C, the Caspian is still swimmable, and the light is golden. Rainfall is low (about 16mm) and days are long and bright.
This is ideal weather for the full city — the Caspian Boulevard, Fountains Square, the Old City, and the Flame Towers viewpoints — and for the day trips, with Gobustan, Yanar Dag, and Ateshgah comfortable again now that the steppe has cooled. Beach time on the Absheron Peninsula is still on the table early in the month.
Travel score
Baku September Weather Stats
Avg High
27°C
Avg Low
19°C
Rainy Days
5
16mm total
Sunshine
8.5h
Daily avg
Humidity
70%
comfortable
UV Index
7
High
Wind
18 km/h
Gusts 36
Sea Temp
25°C
Avg water temp
Crowds
Very busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
21 μg/m³
PM10
40 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
27°C
Nighttime
19°C
Humidity and wind affect how the actual temperature feels.
Wind
18 km/h
Max gust 36 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Among the best months — warm and golden
- Caspian still swimmable
- Comfortable for day trips again
- Long, bright days
Cons
- Peak shoulder-season prices
- High demand — book ahead
- Subdued mood around Sep 27
- Wind picks up later in the month
September Events & Festivals
- Top shoulder season — among the best months
- Day of Remembrance (Sep 27) — national commemoration
- Caspian still warm enough to swim
- Comfortable for all-day sightseeing + day trips
Baku in September — Full Picture
September is one of Baku's best months — the summer heat softens to a warm, pleasant 27°C/19°C, the Caspian is still swimmable, and the light is golden. Rainfall is low (about 16mm) and days are long and bright.
This is ideal weather for the full city — the Caspian Boulevard, Fountains Square, the Old City, and the Flame Towers viewpoints — and for the day trips, with Gobustan, Yanar Dag, and Ateshgah comfortable again now that the steppe has cooled. Beach time on the Absheron Peninsula is still on the table early in the month.
Demand stays high through this shoulder season and prices remain elevated — 4-star hotels run $70-110/night — so book ahead. September 27 is the Day of Remembrance, a national commemoration with a more subdued public mood.
For travelers who want warmth without July's extremes, September rivals May as the best time to visit Baku.
What to Wear & What to Pack
Warm, mellow early autumn — around 27°C/19°C, one of the best months. Short sleeves by day, a light layer for evenings. UV 7 — sunglasses, hat, SPF 30+.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
16.3°C
9.3°C
7.3/mo
Summer (Jun·Jul·Aug)
29.7°C
21.7°C
2.7/mo
Autumn (Sep·Oct·Nov)
Current20.3°C
13.3°C
6.7/mo
Winter (Dec·Jan·Feb)
8.7°C
3.7°C
8.7/mo
Baku Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 8° | 3° | 9d·25mm | 3.5h | 78% | 1 | Quiet | Low season | |
| 8° | 3° | 8d·22mm | 4h | 77% | 2 | Quiet | Low season | |
| 11° | 5° | 8d·22mm | 5h | 76% | 3 | Moderate | Shoulder | |
| April (Best) | 16° | 9° | 7d·18mm | 6.5h | 75% | 5 | Busy | Shoulder |
| May (Best) | 22° | 14° | 7d·18mm | 8h | 73% | 7 | Very busy | Peak |
| 27° | 19° | 4d·8mm | 10h | 68% | 9 | Very busy | Peak | |
| 31° | 23° | 2d·3mm | 11h | 65% | 10 | Busy | Peak | |
| 31° | 23° | 2d·6mm | 10.5h | 67% | 9 | Busy | Peak | |
| September (Best) | 27° | 19° | 5d·16mm | 8.5h | 70% | 7 | Very busy | Peak |
| October (Best) | 20° | 13° | 7d·25mm | 6.5h | 74% | 4 | Busy | Shoulder |
| 14° | 8° | 8d·30mm | 4.5h | 77% | 2 | Moderate | Low season | |
| 10° | 5° | 9d·28mm | 3.5h | 78% | 1 | Moderate | Shoulder |
View Other Months
Baku September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Baku?
Baku in September is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Baku in September?
Baku September averages a high of 27°C and a low of 19°C.
Does it rain much in Baku in September?
Baku September averages 16mm of rainfall over about 5 rainy days.
What should I wear in Baku in September?
Warm, mellow early autumn — around 27°C/19°C, one of the best months. Short sleeves by day, a light layer for evenings. UV 7 — sunglasses, hat, SPF 30+.
What time are sunrise and sunset in Baku in September?
Baku September sunrise is 06:05 and sunset is 18:40, with 12h 35min of daylight.
What's the air quality like in Baku in September?
Baku September air quality (AQI) averages 54, rated Moderate. PM2.5 averages 21μg/m³.
What activities are recommended in Baku in September?
In September, Baku is great for Full Caspian Boulevard + Fountains Square, Gobustan + mud volcanoes day trip, Yanar Dag + Ateshgah fire sites.
Is September peak season in Baku?
Baku September crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Baku
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.