Historical Race Day Weather for the London Marathon

April 26, 2026

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 70% Humidity

Wind E 10 mph Wind

Race day high 64°F 18°C

Race day low 45°F 7°C

PR Score 99.27 Normal score 99.38

Course Score 99.38 Course-only Score

Course-adjusted pacing

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April 27, 2025

Race day snapshot

Clear

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 76% Humidity

Wind WNW 2 mph Wind

Race day high 68°F 20°C

Race day low 45°F 7°C

PR Score 98.95 Normal score 99.38

Course Score 99.38 Course-only Score

April 21, 2024

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 46°F 8°C

Start Humidity 59% Humidity

Wind N 16 mph Wind

Race day high 51°F 11°C

Race day low 39°F 4°C

PR Score 99.38 Normal score 99.38

Course Score 99.38 Course-only Score

April 23, 2023

Race day snapshot

Drizzle

Start Line Conditions

Start Temp 52°F 11°C

Start Humidity 81% Humidity

Wind SSW 9 mph Wind

Race day high 54°F 12°C

Race day low 47°F 8°C

PR Score 99.38 Normal score 99.38

Course Score 99.38 Course-only Score

October 2, 2022

Race day snapshot

Drizzle

Start Line Conditions

Start Temp 57°F 14°C

Start Humidity 89% Humidity

Wind W 5 mph Wind

Race day high 64°F 18°C

Race day low 51°F 11°C

PR Score 98.56 Normal score 99.38

Course Score 99.38 Course-only Score

October 3, 2021

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 80% Humidity

Wind SW 9 mph Wind

Race day high 60°F 16°C

Race day low 52°F 11°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

Live Forecast Tool

Want course-specific race day conditions?

Use the weather tracker to see how temperatures, headwinds, and tailwinds could change across the course based on your goal time and start setup.

Open 2026 London Marathon Weather Tracker

October 4, 2020

Race day snapshot

Rain

Start Line Conditions

Start Temp 49°F 9°C

Start Humidity 89% Humidity

Wind SW 15 mph Wind

Race day high 52°F 11°C

Race day low 48°F 9°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

April 28, 2019

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 50°F 10°C

Start Humidity 65% Humidity

Wind NW 14 mph Wind

Race day high 56°F 13°C

Race day low 45°F 7°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

April 22, 2018

Race day snapshot

Sunny

Start Line Conditions

Start Temp 64°F 18°C

Start Humidity 76% Humidity

Wind SSW 9 mph Wind

Race day high 71°F 22°C

Race day low 52°F 11°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

April 23, 2017

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 48°F 9°C

Start Humidity 75% Humidity

Wind SE 6 mph Wind

Race day high 58°F 14°C

Race day low 44°F 7°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

April 24, 2016

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 41°F 5°C

Start Humidity 73% Humidity

Wind NNW 12 mph Wind

Race day high 49°F 9°C

Race day low 38°F 3°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

November 30, -0001

Race day snapshot

Drizzle

Start Line Conditions

Start Temp 46°F 8°C

Start Humidity 90% Humidity

Wind NNE 9 mph Wind

Race day high 51°F 11°C

Race day low 42°F 6°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

November 30, -0001

Race day snapshot

Sunny

Start Line Conditions

Start Temp 51°F 11°C

Start Humidity 63% Humidity

Wind NW 8 mph Wind

Race day high 58°F 14°C

Race day low 47°F 8°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

November 30, -0001

Race day snapshot

Sunny

Start Line Conditions

Start Temp 45°F 7°C

Start Humidity 73% Humidity

Wind SW 4 mph Wind

Race day high 55°F 13°C

Race day low 34°F 1°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

November 30, -0001

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 48°F 9°C

Start Humidity 72% Humidity

Wind WSW 9 mph Wind

Race day high 56°F 13°C

Race day low 38°F 3°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

November 30, -0001

Race day snapshot

Partly Cloudy

Start Line Conditions

Start Temp 55°F 13°C

Start Humidity 81% Humidity

Wind ENE 2 mph Wind

Race day high 64°F 18°C

Race day low 45°F 7°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score

November 30, -0001

Race day snapshot

Drizzle

Start Line Conditions

Start Temp 56°F 13°C

Start Humidity 74% Humidity

Wind WSW 5 mph Wind

Race day high 63°F 17°C

Race day low 45°F 7°C

PR Score 0.00 Normal score 99.38

Course Score 0.00 Course-only Score