In short
- Watch the pressure trend, not just the number. Many anglers find a steady or slowly falling barometer fishes better than a sharp rise after a front.
- Wind moves food and colours the water. Fishing into a warm wind is an old rule for good reason.
- Overcast, mild days and a little rain often make fish less wary than bright, still conditions.
- Dawn and dusk are prime times, and solunar periods give you a few more windows to plan around.
Air pressure and fishing
Pressure is the reading anglers talk about most. On its own, a figure like 1015 hPa tells you little. What matters is which way it's moving and how fast.
- Steady or slowly falling pressure, often ahead of an incoming front, is widely regarded as a good time to fish. Many species feed actively as the weather starts to change.
- A sharp rise after a front passes, usually with clear skies and a cold wind, is often a slow time. Fish can take a day or two to settle.
- Long spells of high, stable pressure bring bright, still days. Fish may move deeper or feed mainly early and late.
These are rules of thumb from angling experience rather than guarantees, and they vary between species and waters. WeatherIQ shows the current pressure, whether it's rising, steady or falling, and a chart for the next hours, so you can see the trend at a glance.
Wind direction and strength
Wind pushes surface food, warmer water and colour towards one bank, and fish often follow. That's why many anglers like to fish with the wind blowing towards them, especially a mild south-westerly. A cold northerly or easterly wind is traditionally seen as harder going.
Strength matters too. A light ripple breaks up the surface and makes fish less cautious. Strong gusts make casting and bite detection difficult, and can make boats and exposed banks unsafe. WeatherIQ shows wind speed, gusts and the direction the wind is coming from for every hour.
Rain, cloud and light
Overcast skies and light rain often help, because fish feel safer in lower light and rain can wash food into the water. Heavy or prolonged rain is different on rivers. It raises and colours the water, which can switch some fish on and put others off, and very high water is dangerous.
Light is one of the most reliable factors. The first and last hours of daylight are prime time on most waters. WeatherIQ shows sunrise, sunset and golden hour for each day, and a rain-chance chart for the next 24 hours, so you can find a dry window.
Temperature
Fish are cold-blooded, so water temperature controls how active they are. Water warms and cools much more slowly than the air, so a single warm afternoon in early spring rarely changes much, while a few mild days in a row can. Sudden cold snaps usually slow feeding. In high summer, cooler mornings and evenings are often better than the heat of the day.
Best fishing times and solunar periods
Solunar theory says fish and wildlife are more active at certain points in the moon's daily cycle. Major periods last about two hours, around when the moon is directly overhead or underfoot. Minor periods last about an hour, around moonrise and moonset. Periods that overlap with dawn or dusk are traditionally the strongest.
WeatherIQ works these out for any place and shows them on a simple 24-hour bar, alongside daylight and golden hour, with the next best time at the top. Treat them as one more factor to plan around, alongside the weather, rather than a promise.
Coarse, game and sea fishing
- Coarse fishing
- Carp, bream, tench, roach and other still-water species respond strongly to temperature and pressure. Mild, overcast days with a gentle warm wind are classic conditions.
- Game fishing
- Trout and salmon fishing depends heavily on river levels and water clarity, so rain over the previous few days matters as much as the forecast for today. Cool, overcast days often bring fish closer to the surface.
- Sea fishing
- Wind direction is key: an onshore wind brings colour and food in, while a strong onshore wind can make the shore dangerous. WeatherIQ doesn't show tides, so always check tide times separately.
Stay safe and fish legally
Leave the water if thunder is possible, as carbon rods can attract lightning, and always keep away from overhead power lines. Wear a lifejacket on boats, rocks, piers and steep banks. In England and Wales you need a rod fishing licence for freshwater fishing, as well as permission from whoever owns the fishing. See our terms for more on staying safe and fishing legally.
Questions anglers ask
- What is the best weather for fishing?
- Mild, overcast conditions with a gentle wind and steady or slowly falling pressure are widely seen as ideal for many species, especially around dawn and dusk. Bright, still days after a cold front are often the hardest.
- Does air pressure affect fishing?
- Many anglers find it does, especially sudden changes. Falling pressure ahead of a front is often productive, while a sharp rise afterwards can slow fish down for a day or two. The trend matters more than the exact number.
- What are solunar times?
- Solunar times are periods when the moon's position is traditionally thought to make fish more active: major periods when the moon is overhead or underfoot, and minor periods around moonrise and moonset.
- Is it worth fishing in the rain?
- Often, yes. Light rain and low cloud can make fish less wary and wash food into the water. Very heavy rain can make rivers rise and colour quickly, and dangerous, so check conditions before you go.
- Does WeatherIQ show tides?
- No. WeatherIQ shows weather, sun, moon and solunar times. For sea fishing, check tide times from an official tide table as well.