Shipyard Old Port Half Marathon weather.
Typically 19°C on race morning; rain in 5 of the last 10 years. Race morning (07:00 to 11:00 local time) in Portland on race day in each of the last 10 years; the 2027 race is on 5 Jun 2027.
- Typical
- 19°C (66°F)
- race-morning average
- Coolest
- 9°C (48°F)
- lowest reading, 07:00–11:00
- Warmest
- 28°C (82°F)
- highest reading, 07:00–11:00
- Wet years
- 5 of 10
- rain, drizzle or worse
- Humidity
- 70%
- typical
- Wind
- 11 km/h
- typical, at 10 m
Race morning, 07:00–11:00
Year by year
| Race day | Average | Low–high | Humidity | Wind | Rain | Conditions |
|---|---|---|---|---|---|---|
| 6 Jun 2026 | 17°C (62°F) | 16°C (60°F)–17°C (63°F) | 78% | 10 km/h | 0.4 mm | Overcast |
| 7 Jun 2025 | 19°C (66°F) | 18°C (65°F)–19°C (66°F) | 94% | 7 km/h | 4.0 mm | Light rain |
| 8 Jun 2024 | 21°C (69°F) | 19°C (66°F)–22°C (72°F) | 62% | 13 km/h | 4.2 mm | Light drizzle |
| 3 Jun 2023 | 10°C (50°F) | 9°C (49°F)–11°C (52°F) | 86% | 20 km/h | 5.8 mm | Drizzle |
| 4 Jun 2022 | 16°C (60°F) | 15°C (59°F)–17°C (62°F) | 82% | 10 km/h | 0.0 mm | Overcast |
| 5 Jun 2021 | 27°C (80°F) | 26°C (78°F)–27°C (81°F) | 59% | 16 km/h | 0.1 mm | Partly cloudy |
| 6 Jun 2020 | 25°C (77°F) | 24°C (75°F)–27°C (81°F) | 81% | 10 km/h | 4.4 mm | Mainly clear |
| 8 Jun 2019 | 20°C (68°F) | 19°C (65°F)–21°C (69°F) | 48% | 4 km/h | 0.0 mm | Clear |
| 2 Jun 2018 | 27°C (80°F) | 26°C (78°F)–28°C (83°F) | 55% | 13 km/h | 0.0 mm | Overcast |
| 3 Jun 2017 | 15°C (59°F) | 14°C (57°F)–17°C (62°F) | 60% | 16 km/h | 0.2 mm | Light drizzle |
Each row is the race's date that year where we know it, else the same weekday nearest its usual date. Temperatures and humidity are averaged over 07:00 to 11:00 local time, rain is the total over those hours, and conditions are the commonest over the morning.
Kit and pacing
What it means
Warm: adjust your goal pace
Around 19°C on race morning costs most runners time. Plan to run a few seconds per kilometer slower than in cool weather, take on fluid and salt at every station, and wear light colors and sun cream.
Be ready for rain
It rained on 5 of the last 10 race mornings. A bin bag or cheap poncho keeps you dry in the start pen; anti-chafe balm and socks that don't hold water help over the distance, and a cap keeps rain out of your eyes.
The weather varies a lot
Race mornings here have ranged by 17°C from year to year. Pack for both, and settle your kit and pacing from the forecast in the last few days.
General guidance from past years' numbers. Check the forecast in race week.
Weather data by Open-Meteo.com, from its historical weather archive (CC BY 4.0).