Sussex Climate and Average Weather
Climate of Sussex: average temperatures, rainfall and seasons month by month.
Climate in Sussex month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 46° | 36° | 4,6 in | ★★☆☆☆ |
| February | 49° | 41° | 4,3 in | ★★★☆☆ |
| March | 53° | 40° | 2,0 in | ★★★☆☆ |
| April | 58° | 44° | 1,5 in | ★★★★☆ |
| May | 64° | 49° | 2,0 in | ★★★★☆ |
| June | 69° | 54° | 2,0 in | ★★★★★ |
| July | 73° | 58° | 2,2 in | ★★★★☆ |
| August | 71° | 56° | 1,5 in | ★★★★★ |
| September | 67° | 54° | 3,1 in | ★★★★☆ |
| October | 60° | 50° | 4,3 in | ★★★☆☆ |
| November | 52° | 43° | 3,6 in | ★★★☆☆ |
| December | 50° | 42° | 3,4 in | ★★★☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in Sussex
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Sussex compares with nearby places
Annual averages, and the difference against Sussex.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| London Heathrow Airport | 37 mi | 54°F | +33°F warmer | 30 in |
| Hampshire | 38 mi | 53°F | about the same | 36 in |
| Kensington | 41 mi | 54°F | +33°F warmer | 29 in |
| Notting Hill | 42 mi | 54°F | +33°F warmer | 29 in |
| Westminster | 42 mi | 54°F | +33°F warmer | 29 in |
Climate by airport in Sussex
1 airports mapped in this atlas
Climate by city in Sussex
1 cities mapped in this atlas
Best time to visit Sussex
Go in May, June, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
What this means for Sussex
Today is about average for August. The forecast high of 69°F is in line with the 71°F typical for this month.
A 47% chance means rain is likely somewhere nearby at some point - carry a layer, but do not cancel.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 57°F.
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 61°F, so mornings feel nothing like afternoons
- A packable rain shell - 3 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
Summary
Sussex is a county in England. Sussex is a county or metropolitan area in the United Kingdom. It has a population of about 1.7 million.
Right now it is 60°F (16°C) in Sussex with overcast. It feels like 59°F. Today runs from 58°F to 69°F. Chance of precipitation is 47%. Sightseeing conditions score 8.5/10 - excellent - go now.
The best time to visit Sussex is May, June, July and August. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 73°F, while January is the coldest with lows near 36°F.
The closest major airport is London Gatwick Airport (LGW), about 20 mi away. Nearby highlights include Big Ben and the Houses of Parliament, River Thames, British Museum and Tower of London.
In plain terms. Today is about average for August. The forecast high of 69°F is in line with the 71°F typical for this month. The best window to be outside is roughly 12 PM to 3 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Sussex today at 9.5/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Sussex
| Type | County |
|---|---|
| Region | England |
| Country | United Kingdom |
| Continent | Europe |
| Coordinates | 50°55′40.8″N 0°27′42.1″W (50.928, -0.4617) |
| Population | 1.700.000 |
| Local time | 12:12 PM (UTC+01:00) |
| Best months | May, June, July and August |
| Climate | Temperate |
Weather map for Sussex
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Sussex
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Sussex?
Sussex is a county in England. Its coordinates are 50.928, -0.4617. It lies in Europe.
What is the weather like in Sussex right now?
It is currently 60°F (16°C) with overcast. Humidity is 82% and wind is 5 mph.
When is the best time to visit Sussex?
May, June, July and August offer the most comfortable conditions in Sussex, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Sussex in?
Sussex observes Europe/London (UTC+01:00). The local time is 12:12 PM.
How many people live in Sussex?
Sussex has a population of approximately 1.7 million.
What is the nearest airport to Sussex?
The closest airports are London Gatwick Airport (LGW), 20 mi away, London Heathrow Airport (LHR), 37 mi away and Paris Charles de Gaulle Airport (CDG), 188 mi away.
What are the top things to do in Sussex?
Popular options include Big Ben and the Houses of Parliament, River Thames, British Museum, Tower of London, Stonehenge, Avebury and Associated Sites and Stonehenge.
What places are in Sussex?
Sussex covers 2 places in this atlas, including London Gatwick Airport and Brighton.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (uk-regions) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 12:12 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
