New Brunswick has a temperate climate with warm summers and freezing winters.
New Brunswick has an average annual temperature of 5.0°C across all 13 cities, with approximately 1042 mm of annual precipitation and average humidity of 86%. Temperatures peak in August and drop to their lowest in January, while rainfall is highest during autumn months.
The warmest city is Chatham with average July highs of 30.3°C, while Edmundston is the coldest with average January lows of -32.4°C. Humidity remains high throughout the year, especially during winter months, creating cold and damp conditions. These seasonal patterns make summer ideal for outdoor activities, while winters bring freezing conditions and heavy snowfall.
| Month | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | ❄️ | 4.5°C | -26.7°C | -11.1°C | 94% | 78 | 0.6 | 1.30 |
| February | ❄️ | 3.8°C | -25.1°C | -10.6°C | 94% | 66 | 0.7 | 2.20 |
| March | ⛅ | 9.7°C | -19.8°C | -5.0°C | 89% | 81 | 0.7 | 3.40 |
| April | ⛅ | 17.6°C | -7.8°C | 4.9°C | 82% | 80 | 0.5 | 4.40 |
| May | ⛅ | 24.0°C | -1.8°C | 11.1°C | 81% | 88 | 0.3 | 5.10 |
| June | ⛅ | 27.5°C | 3.9°C | 15.7°C | 81% | 96 | 0.3 | 5.50 |
| July | ⛅ | 28.7°C | 9.1°C | 18.9°C | 82% | 94 | 0.3 | 5.50 |
| August | ⛅ | 28.7°C | 7.9°C | 18.3°C | 82% | 87 | 0.3 | 4.90 |
| September | ⛅ | 25.9°C | 2.5°C | 14.2°C | 82% | 87 | 0.3 | 3.80 |
| October | ⛅ | 20.2°C | -3.5°C | 8.4°C | 84% | 96 | 0.4 | 2.40 |
| November | ⛅ | 14.5°C | -10.8°C | 1.9°C | 87% | 96 | 0.4 | 1.40 |
| December | ⛅ | 7.8°C | -20.9°C | -6.5°C | 91% | 94 | 0.5 | 1.00 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 13 cities in New Brunswick
🧥 Pack heavy layers and prepare for snow — this is a Severe Winter destination.
🌤️ Conditions are ideal for outdoor activities throughout the day in this Mild Summer.
☔ Moderate Rainfall expected — carry rain gear and plan outdoor activities around these months.
Region-wide monthly averages across 13 cities · 1981–2025 · °C
Temperatures rise steadily from spring, peak in August, and gradually decline through autumn into winter.
These seasonal patterns make summer ideal for outdoor activities, while winters bring freezing conditions and heavy snowfall.
Region-wide monthly rainfall · 1981–2025 · mm/month
Monthly averages · 1981–2025
💧 Humidity peaks at 94% in January · annual avg 86%
The warmest year on record was 2024 (avg: 7.6°C), while the coldest year was 1982 (avg: 3.0°C).
Averaged across all 13 cities in New Brunswick · Last 10 years · °C
Averaged across all 13 cities in New Brunswick · Last 10 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 13 cities in New Brunswick for each year.
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 🔥 | -6.0°C | 6.9°C | 19.8°C | 770 | 82% | 0.4 m/s |
2024 | -4.5°C | 7.6°C | 19.7°C | 836 | 84% | 0.4 m/s |
2023 | -6.2°C | 6.3°C | 18.8°C | 985 | 86% | 0.4 m/s |
2022 | -7.1°C | 5.9°C | 18.9°C | 1003 | 84% | 0.4 m/s |
2021 | -4.8°C | 7.0°C | 18.8°C | 880 | 84% | 0.4 m/s |
2020 | -7.7°C | 5.6°C | 18.9°C | 806 | 83% | 0.4 m/s |
2019 | -7.4°C | 5.0°C | 17.3°C | 1054 | 85% | 0.4 m/s |
2018 | -8.0°C | 5.4°C | 18.9°C | 1099 | 85% | 0.4 m/s |
2017 | -7.6°C | 5.4°C | 18.3°C | 937 | 85% | 0.4 m/s |
2016 | -7.3°C | 5.4°C | 18.1°C | 950 | 85% | 0.4 m/s |
Showing 1 to 10 of 45 years
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.
