Weather and Fishing: How Conditions Affect Your Catch

By Alex Clayton · Updated 24 October 2026

Most UK anglers rate mild, settled, overcast days with a light breeze as the best fishing weather. But there is no single perfect forecast. How the weather affects your catch depends on the species, the season and whether you are on a river or a still water.

Much of the weather advice repeated online is angler lore rather than measured fact. “An east wind is hopeless.” “Falling pressure switches fish on.” Some of it holds up on the bank, some of it doesn’t, and very little has been properly tested.

This guide separates the reliable from the rule of thumb. It covers wind, pressure, cold, heat, rain and how to check conditions before you set off. It sits within our wider guides to reading the water.

What Is the Best Weather for Fishing?

The best weather for fishing in the UK is usually settled, mild and overcast, with a light breeze. Low light makes many fish less wary, and a ripple breaks up your silhouette on the bank. That is angler experience rather than science, but it is consistent enough to plan around.

Good weather also shifts with the season. In winter, wait for a mild spell. In a summer heatwave, grab the cooler, cloudy day. To match species to the time of year, see what to target each season.

Bright sun pushes many fish deeper or into shade: under overhanging trees, into weed beds, beside pontoons and along deeper margins. Under cloud they tend to roam and feed more confidently. In bright spells the first and last hours of daylight often fish best, as our guide to the best times of day to fish explains.

Condition	What tends to happen	What to try
Overcast and mild	Fish roam and feed more freely	Fish open water and your usual swims with confidence
Bright and calm	Fish sit deep or in shade, and are easily spooked	Go early or late, fish shade and depth, scale down
Windy	Food and coloured water drift with the wind	Fish the bank the wind is blowing into, with a feeder or heavier float
Cold snap	Fish feed less and in smaller areas	Fish deeper, slower and smaller
Heatwave	Warm water, less oxygen, sluggish fish	Dawn and dusk, oxygenated water, quick fish care
Heavy rain on a river	Level rises and water colours	Fish slacks and margins, or wait for it to fine down

The moon comes up in most weather debates, but the evidence is mostly anecdotal. Read whether the moon phase matters for the detail.

If the forecast is mixed, go anyway and pick the swim to suit the weather.

Fishing in the Wind: Direction, Strength and Safety

A blustery day can wreck your float presentation in ten minutes. It can also put fish on the bank, if you are fishing the right side of the lake with the right gear.

The Met Office describes wind as air moving between areas of different pressure. That link to pressure comes up again in the next section. On the bank, what matters is which way it is blowing and how hard.

Wind direction

On still waters, many anglers head for the bank the wind is blowing into. The idea is that surface food and warmer surface water drift that way, and fish follow. In cold weather, some anglers do the opposite and pick the sheltered side, where the water is calmer and fishing is more comfortable.

The cold east or north-east wind is widely blamed for poor sport in the UK. Plenty of anglers swear by that rule, but it is experience rather than proof, and it is not a reason to stay at home.

Wind strength

A steady breeze is usually a help. It adds ripple, gives fish cover and can colour the margins slightly. A gale ruins presentation and bite detection. When the wind picks up:

Switch from a float to a feeder, or use a heavier float with the line sunk below the surface.
Cast across or with the wind rather than straight into it.
Keep rod tips low, or sink them, to cut line bow.
Fish shorter sessions in exposed swims.

On rivers, a wind blowing against the flow makes the surface choppy and drags floats off line. A heavier float that rides the chop, or a feeder, gives you more control.

Wind on big waters

On a big open lake like Windermere, a wind-blown shore and a decent chop are conditions I’m happy to see when I’m lure fishing for perch and pike. In my experience, the trouble starts when it gets strong enough to make boat control and trolling hard work.

Strong wind on large waters is a genuine safety risk, especially in a boat. Check the forecast before you launch, and if you are unsure, don’t take the boat out.

Windward bank: choose it in mild or warm weather when a steady breeze is pushing food and warmer water in. Sheltered bank: choose it in a cold wind, a gale, or when you can’t present a bait properly anywhere else.

Air Pressure and Fishing: The Short Version

Do fish really feel the barometer, or are anglers reading the weather that comes with it?

The common claim is that falling pressure ahead of a weather front can bring on a feeding spell, while bright, settled high pressure can be slow. It is a pattern many anglers report, not a proven cause and effect, so treat it as a rule of thumb.

The more useful way to read pressure is as a forecast of what is about to happen. Falling pressure usually means cloud, wind or rain on the way. Rising pressure often means it is clearing and settling. Those changes alter light levels, temperature and water clarity, and those are things you can plan your swim around.

So don’t stay at home because the barometer is high. Look at what the weather will be doing over the hours you fish, and for the longer explanation, read how air pressure affects fishing in more detail.

Use pressure as a clue to the weather, not as a switch for the fish.

Fishing in Cold Weather: Slow Down and Fish Small

Frozen fingers, a bait that hasn’t moved for three hours, and the nagging feeling the lake is empty. Many winter blanks come from fishing summer swims at summer pace with summer-sized baits.

Cold weather rarely stops fish feeding altogether. Fish are cold-blooded, so in cold water they are less active and eat less. They also gather in a smaller area. Water temperature changes more slowly than air temperature, so a mild day after a long cold spell may take a while to have any effect.

Where to fish in the cold

Deeper water, which tends to stay more stable than the shallows.
Areas out of the coldest wind, often the sheltered bank.
Structure and features: drop-offs, weed remains, pontoons, sunken trees and boat moorings.
On rivers, slower, steadier water, slacks, eddies and the inside of bends.

How to fish in the cold

Scale everything down. Use smaller baits and smaller hooks, and introduce much less feed, because a fish that is barely eating won’t get through a big bed of bait. Slow your lure retrieves right down. Use sensitive bite indication, such as a light float or a fine quivertip, because winter bites are often tiny.

Time your sessions around the mildest part of the day rather than sitting out from dawn to dark.

In my experience, winter perch on Windermere pack up tight to structure and won’t chase far. A small drop-shot worm held almost still beside a feature is the way I fish for them when it’s cold. Pike are a winter option too, and deadbaiting is one of the methods I use for them at that time of year.

A run of mild, overcast days in the middle of winter is often worth getting out for. Fish care still matters in the cold: keep fish wet, handle them quickly and get them back.

Best for: perch, pike and other species that stay active in cold water. Skip if: the only swims available are fully exposed in a hard frost.

Fishing in Hot Weather: Low Oxygen, Bright Sun and Storms

A hot, cloudless day feels perfect for being outdoors. It is often one of the hardest days for catching, because warm water holds less dissolved oxygen than cool water. Add bright light and fish become sluggish, wary and hard to tempt.

When to fish in the heat

Fish early and late. The first and last hours of daylight, as covered earlier, are when water temperature and light ease off. Where the venue allows night fishing, the hours of darkness are often productive. Through the middle of a hot day, rest the swim, re-tie your rigs and find some shade for yourself.

Where to fish in the heat

Look for shade, depth and oxygen:

Shaded margins under trees and bushes.
Deeper water, away from the warmest shallows.
Well-oxygenated areas: inflows, weirs, and the bank the wind is blowing into.
Healthy weed, which can hold fish looking for cover.

On still waters, fish often sit near the surface in bright heat. Surface baits and margin methods can work when nothing else does.

Look after the fish

Warm, low-oxygen water stresses fish, so how you handle them matters more in a heatwave. Play fish firmly rather than letting a fight drag on. Keep them in the water or on a wet unhooking mat, unhook quickly and return them promptly. Avoid holding fish in a keepnet for long.

Get the mat, landing net and unhooking tools ready before you cast, so a fish spends seconds out of the water rather than minutes. If you want a photo, have the camera ready first and keep the fish low over the mat.

Some fisheries bring in hot-weather rules, such as limits on keepnets or closing waters altogether. Check with the fishery before you travel.

Summer storms

Carbon rods conduct electricity. If you hear thunder or see lightning, lay your rods down flat, move away from the water and wait it out under proper shelter, or leave. Check the Met Office weather warnings before a summer session, so a storm doesn’t catch you on an exposed bank.

If a heatwave is forecast, plan a dawn session and pack up by mid-morning.

Rain, River Levels and Checking Conditions Before You Go

Rain matters most for what it does to rivers. Light rain, and the cloud that comes with it, can help by lowering light levels and adding a touch of colour. Heavy rain can raise and colour a river fast, pushing fish into slacks and margins.

On still waters, warm summer rain is often welcomed, while cold winter rain tends to be less popular. For tactics, see how to fish in the rain, and for rivers that have burst their banks, read about fishing a river as it fines down after a flood.

A five-step check before you go

A forecast for your venue is the starting point. This routine turns it into a decision:

Read the hourly forecast, not just the daily summary. Look at wind strength and direction, cloud cover and temperature for the hours you plan to fish.
Check the river. In England, the Environment Agency’s Check for flooding service shows river levels and rainfall from measuring stations, along with flood alerts and warnings and a 5-day flood forecast produced with the Met Office. In Wales, Scotland and Northern Ireland, use your own national agency’s service, such as Natural Resources Wales or SEPA.
Look at the trend. What has the weather done over the last few days? A cold snap ending, a mild spell building or a river rising or dropping tells you more than one day’s forecast.
Pick the swim to suit. Windward or sheltered bank, shade or depth, or slack water on a raised river.
Check with the fishery if conditions are extreme, because some waters close in floods or heat.

Never fish from a river bank that is in flood or close to bursting. Ground gives way, and fast water is no place to be.

Five minutes on this check before you load the car can save a wasted trip and put you in the right swim.

Frequently asked questions

Is it worth fishing in the rain?

Usually, yes. Light rain and the cloud cover that comes with it often help, because lower light makes fish less wary. Heavy rain is a different story on rivers, where levels can rise and colour quickly, so check river levels before you go. Warm summer rain on a still water is generally a better bet than cold winter rain. The five-step pre-trip check on this page covers what to look at before you set off.

Is an east wind bad for fishing?

Many UK anglers believe so, probably because east and north-east winds here are often cold. It is common experience rather than proof, and it isn't a reason to stay at home. In a cold east wind, fish the sheltered bank, slow your presentation down, use smaller baits and target the mildest part of the day.

Does the moon phase affect fishing?

The evidence is mostly anecdotal. Some anglers swear by a full or new moon, but the support for it comes from angler stories rather than measured results. Most anglers find water temperature, light levels and wind make a bigger difference to the catch, so plan around those first and treat the moon as a curiosity.

What temperature is too cold or too hot to fish?

There is no fixed cut-off. Fish can be caught in almost any UK conditions, but extremes change where and when you should fish. In cold, go deep and slow. In heat, fish dawn and dusk and handle fish quickly to limit stress. Fisheries may close in floods, ice or heat, so check with the fishery before you travel.