Monthly weather averages & travel planning

Europe › 🇪🇸 Spain › Madrid
Updated: March 2026
September is a excellent time to visit Madrid (8/10). With 11 daily sunshine hours and only 4 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 6th sunniest of the year in Madrid. Beach and outdoor-focused visitors will find September ideal, though hotel prices reflect demand and popular sites get crowded by mid-morning. October offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Madrid'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 September. 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.
Planning a trip to Madrid in September? Days warm to 26°C on average while evenings hold at 14°C, giving you a clear sense of what to pack. The month delivers roughly 11 hours of sunshine per day and 21mm of rainfall spread across 4 wet days, so there is plenty of fair weather to work with.
26°C
79°F
Avg High
14°C
57°F
Avg Low
4 days
21 mm total
Rain Days
11h
per day avg
Sunshine
65%
Moderate
Humidity
The 12°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 14 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 79°F average high, 57°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Madrid in September means dressing for 26°C days and 14°C evenings. A light cotton tee with a casual overshirt works well at 26°C, the overshirt doubles as a layer for air-conditioned venues. Evenings drop 12°C to around 14°C, a notable shift that catches underprepared visitors off guard. Pack a dedicated evening layer. European cobblestones reward low-profile walking shoes over flip-flops or heels, with cushioned trainers or leather walking shoes being the practical choice.
Local tip: Many of Madrid's museums and galleries maintain cool interior temperatures regardless of outdoor conditions. A compact layer in your daypack lets you move between warm streets and chilled exhibition halls without discomfort.
September has no major festivals or public holidays in Madrid, 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.
Based on 26°C average highs and 4 rainy days
Madrid's September weather is dominated by the Azores High, a semi-permanent subtropical anticyclone that blocks Atlantic rain systems from reaching the Mediterranean. As a result, September delivers reliably sunny, dry conditions with temperatures averaging 26°C. The sea moderates extreme heat and keeps overnight lows around 14°C, making the city noticeably more comfortable than inland Mediterranean destinations. 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.
Madrid in September
September ranks 6th sunniest of the year in Madrid, with an average 11 daily sunshine hours. The driest months are July, August, and June. July is the hottest month (32°C avg high); January is the coolest (9°C). From here, temperatures fall 6°C into October. Compared to last month (August: 32°C high, 2 rain days), September is cooler and wetter. September sits in the middle of the annual sunshine ranking for Madrid, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 9°C | 1°C | 7 | 7h | View |
| February | 12°C | 1°C | 6 | 9h | View |
| March | 15°C | 4°C | 7 | 10h | View |
| April | 18°C | 6°C | 8 | 11h | View |
| May | 22°C | 10°C | 7 | 13h | View |
| June | 28°C | 15°C | 3 | 14h | View |
| July | 32°C | 19°C | 1 | 14h | View |
| August | 32°C | 18°C | 2 | 13h | View |
| September | 26°C | 14°C | 4 | 11h | View |
| October | 20°C | 10°C | 7 | 9h | View |
| November | 13°C | 5°C | 7 | 8h | View |
| December | 10°C | 2°C | 7 | 7h | View |
January
7 rain days, 7h sun
February
6 rain days, 9h sun
March
7 rain days, 10h sun
April
8 rain days, 11h sun
May
7 rain days, 13h sun
June
3 rain days, 14h sun
July
1 rain days, 14h sun
August
2 rain days, 13h sun
September
4 rain days, 11h sun
October
7 rain days, 9h sun
November
7 rain days, 8h sun
December
7 rain days, 7h sun
Cities within 500 km with comparable weather conditions
Data Sources for Madrid
Climate normals represent 30-year averages (1991-2020). Individual years may vary.