Question 1

What is the sunniest time of year in Frankfurt?

Accepted Answer

Frankfurt's sunniest time of year is **spring**, with March through May 2025 delivering more sunshine than any other season.

Across spring 2025 (March 1 to May 31), Frankfurt recorded roughly 1,108 hours of sunshine — about 369 hours per month, or close to 12 hours of sun per day. The three brightest months of the entire year all fell in this window: March led with 373.7 hours, followed by May at 370.6 hours and April at 363.9 hours.

Sunshine remained generous across the calendar, with Frankfurt totalling 3,962.6 hours over 2025. The dimmest stretch arrived in late summer, when August registered just 249.6 hours — the lowest of any month that year.

Spring also paired its long days with warmth, averaging 33.1°C (91.6°F) and peaking in May at 34.6°C (94.3°F).

For anyone planning a visit, this makes spring the strongest bet for sightseeing and outdoor activities in Frankfurt, offering the longest reliably bright days before the cloudier conditions of mid-to-late summer set in.

Question 2

What were the temperature extremes in Frankfurt in 2025?

Accepted Answer

Frankfurt swung between a high of 38.4°C (101.1°F) and a low of -9.1°C (15.6°F) in 2025, giving the city an annual temperature span of 47.5°C (85.5°F).

The hottest day in Frankfurt arrived on 2 July 2025, when the temperature peaked at 38.4°C (101.1°F). It was part of a warm summer that delivered 23 days at or above 30°C (86°F), including 5 scorching days that reached 35°C (95°F) or higher.

At the other end of the scale, the coldest moment came on 23 November 2025, when the thermometer dropped to -9.1°C (15.6°F). Winter cold was a regular feature of the year, with 72 days recording a sub-zero overnight low (below 0°C / 32°F).

Across all of 2025, Frankfurt averaged 11.3°C (52.3°F). June was the warmest month with a mean of 20.8°C (69.4°F), while February was the coldest at just 2.0°C (35.7°F).

This wide annual range is typical of Frankfurt's temperate climate, where hot summer spells and frosty winter nights sit only months apart. For visitors, it means packing for genuine heat between June and August, and preparing for frost and freezing nights from late autumn through winter.

Question 3

Which season was the wettest in Frankfurt in 2025?

Accepted Answer

Summer (June to August) was by far the wettest season in Frankfurt in 2025, accounting for roughly 93% of the year's total rainfall. The summer months alone delivered about 2,055 mm (80.9 in) of precipitation, dwarfing every other season.

For comparison, the four meteorological seasons recorded very different totals across 2025:

- **Summer (JJA, Jun–Aug):** ~2,055 mm (80.9 in)
- **Autumn (SON, Sep–Nov):** ~151 mm (5.9 in)
- **Spring (MAM, Mar–May):** ~5 mm (0.2 in)
- **Winter (Jan–Feb 2025):** ~0 mm (0.0 in)

July was the single wettest month, contributing about 1,514 mm (59.6 in) on its own, followed by August with roughly 533 mm (21.0 in). Across the full calendar year, Frankfurt's total precipitation reached approximately 2,210 mm (87.0 in).

This extreme concentration means that rainfall planning in Frankfurt for 2025 centered almost entirely on the summer. Spring and autumn stayed remarkably dry, making them the more reliable windows for outdoor activities, while the heavy mid-summer downpours called for waterproof gear and flexible scheduling. If you were tracking Frankfurt weather and climate patterns in 2025, the standout takeaway is clear: the wet season was short, intense, and squarely centered on July and August.

Question 4

What is the weather like in Frankfurt in December?

Accepted Answer

Frankfurt in December 2025 was warm, exceptionally dry, and consistently sunny, with an average temperature of 26.5°C (79.7°F) across the month.

Daily highs in Frankfurt typically reached around 35.8°C (96.4°F), while overnight lows averaged a mild 18.1°C (64.5°F). The warmest day came on December 28, 2025, peaking at 39.2°C (102.6°F), and the coolest night of the month dipped to just 14.5°C (58.1°F) on December 17. This narrow swing meant comfortable conditions both day and night throughout December.

Rainfall was virtually absent. Frankfurt recorded only 0.1mm (0.00 in) of total precipitation for the entire month, with 30 of 31 days completely dry and just a single day registering any measurable rain. Sunshine was abundant, totaling 351.6 hours, or roughly 11.3 hours per day. Average humidity stayed low at 20.3%, and winds were light at 11.4 km/h (7.1 mph).

For visitors, these December 2025 figures point to reliably bright, rain-free days that are well suited to sightseeing, walking tours, and outdoor markets. The low humidity and gentle breezes added to the comfort, though the strong daytime warmth means light clothing and sun protection are sensible. Overall, December offered some of the most stable and predictable conditions of the year in Frankfurt, with almost no weather disruptions to plan around.

Question 5

How windy is Frankfurt throughout the year?

Accepted Answer

Frankfurt is a relatively calm city when it comes to wind, averaging just 11.8 km/h (7.3 mph) across 2025. Winds are light to gentle for most of the year, rarely strong enough to disrupt everyday outdoor plans.

The breeziest conditions in Frankfurt arrive in late winter and early spring. March 2025 was the windiest month, averaging 14.2 km/h (8.8 mph), followed closely by January at 13.9 km/h (8.6 mph) and February at 13.3 km/h (8.3 mph). By contrast, September 2025 was the calmest month of the year at just 8.7 km/h (5.4 mph).

The seasonal pattern in Frankfurt is clear and consistent:

- **Winter (December 2025 plus January and February 2025):** 12.9 km/h (8.0 mph) average
- **Spring (March to May):** 12.4 km/h (7.7 mph)
- **Summer (June to August):** 11.3 km/h (7.0 mph)
- **Autumn (September to November):** 10.6 km/h (6.6 mph)

In practical terms, these wind speeds mean Frankfurt enjoys comfortable conditions for walking, cycling, and outdoor dining nearly year-round. The slightly breezier early-year months can add a noticeable chill, so a windproof layer is worth packing for late winter and early spring. Late summer and autumn offer the stillest air, making September the ideal time for calm-weather activities in Frankfurt.

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FAQ

What is the sunniest time of year in Frankfurt?

What were the temperature extremes in Frankfurt in 2025?

Which season was the wettest in Frankfurt in 2025?

What is the weather like in Frankfurt in December?

How windy is Frankfurt throughout the year?