Timing your heating oil purchase can save you hundreds of pounds each year. If you buy at the wrong time, you could pay 20% to 30% more than you need to.
This guide shows you the best time of year to buy heating oil. It explains when prices are usually lower and how to plan your buying strategy for the best value.
For complete information about heating oil – how it works, storage and costs – see our Ultimate Guide to Home Heating Oil. This article focuses on when to buy.
2026 Market Snapshot
As of February 2026, heating oil prices in the UK are between 54p and 77p per litre. The average price is about 72p per litre.
Prices are on a declining trend after the winter peak. This means spring 2026 looks like a good time to top up your tank before next winter.
Important Update: March 2026
The current conflict in Iran is affecting oil prices, significantly increasing the wholesale cost of oil, and reducing availability. To ensure you keep your tank topped up, contact the Stoddards team for advice, guidance and price updates.
It’s essential to keep your eye on the latest price fluctuations during times of uncertainty.
When is Heating Oil Cheapest?
The short answer: summer. Heating oil prices typically hit their lowest point between May and August. The cheapest single month is usually July or August, though this can vary from year to year depending on world events.
How Much Can You Save?
Looking at the past 18 months shows the pattern clearly. In June 2024, heating oil averaged around 65p per litre. By December 2024 and January 2025, prices had climbed to 78p to 82p per litre. Then during summer 2025, prices dropped back to around 68p. Winter 2025-26 saw another rise to 83p.
This cycle repeats almost every year. Winter demand pushes prices up. Summer lack of demand brings them back down.
Why Does Heating Oil Cost Less in Summer?
It comes down to supply and demand – the basic rule of any market. In summer, most people turn their heating off. Demand for heating oil drops dramatically.
Oil suppliers often have a surplus of stock and a reduced requirement from customers.
In winter, the opposite happens. Everyone needs heating oil at the same time. Demand shoots up. Suppliers struggle to keep up with deliveries.
Prices rise because demand increases with the cold weather, and keeping warm becomes a priority.
There is also a practical benefit to summer buying. Delivery slots are easier to get. In winter, you might wait a week or more for a delivery.
In summer, you can often get oil within a day or two.
What Else Affects Heating Oil Prices?
Summer versus winter is the biggest factor, but it is not the only one. Several other things can push prices up or down, sometimes very quickly.
World Oil Prices
Heating oil is made from crude oil, so when crude oil prices move, heating oil prices follow. Crude oil is traded on world markets.
Big oil-using countries like the USA and China have huge influence. If their economies are doing well, they buy more oil and prices rise. If they hit problems, they buy less and prices fall.
The Pound Versus the Dollar
Oil is priced in US dollars worldwide. This means the value of the pound against the dollar affects what you pay.
When the pound is strong, heating oil is cheaper for us. When the pound is weak, we pay more. Keep an eye on exchange rates, especially if you see big movements. A sudden drop in the pound can mean higher oil prices within days.
Political Problems and Conflicts
Many of the world’s biggest oil producers are in the Middle East. Political disagreements or clashes in that area could influence oil availability and lead to higher prices.
Wars, disputes and sanctions all create uncertainty. Markets do not like uncertainty, so prices often spike when these events happen.
Recent instances involve tensions between the USA and countries in the Middle East, as well as conflicts impacting regions that produce oil.
Even the threat of conflict can move prices before anything actually happens.
Unexpected Cold Snaps
A sudden cold spell in winter can send heating oil prices soaring overnight. If temperatures drop sharply across the UK or Europe, millions of homes all need heating oil at once. Suppliers cannot always keep up. Prices jump because of the sudden demand.
This is why buying in summer protects you. Even if prices rise in winter, you already have oil in your tank that you bought at summer rates.
Supply Problems
Sometimes, issues at oil refineries or with transportation infrastructure might lower supply.
This might be technical faults, strikes, or transport issues. When supply drops but demand stays the same, prices rise.
These issues are often short-lived, though they might lead to brief rises in prices.
Planning Your 2026 Heating Oil Purchases
Once you grasp the pattern, you can schedule your purchases to maximize your savings.
Here is how to approach it.
Fill Up in Summer
Aim to fill your tank completely between May and August. Even if you still have some oil left, topping up in summer locks in lower prices. Heating oil keeps well for 18 to 24 months, so you do not need to worry about it becoming less efficient.
If you have a big tank (2,500 litres or more), one summer fill might last you through to the next summer. This means you avoid winter prices entirely.
Watch the Prices in Spring
Prices usually start falling in April or May as the weather warms up. Watch the price trends in late spring. If you see prices dropping week by week, wait a bit longer. If they seem to have bottomed out, that is your signal to buy.
Our price chart and trends page can help you track these movements. You can also call us to discuss current prices and when we think they might drop further.
Avoid Waiting Until Winter
Never let your tank run low heading into autumn. October prices are already climbing. By November and December, you are paying peak rates.
Even worse, delivery slots get scarce. You might have to wait days or weeks for a delivery, risking running out and incurring call-out fees for a plumber to get your boiler going again.
Keep your tank at least a quarter full going into winter. This gives you flexibility and means you are not forced to buy at the worst time.
How to Track Heating Oil Prices
Keeping an eye on prices helps you buy at the right moment. You do not need to become a market expert – just watch a few simple things.
Check Prices Weekly
From April onwards, check heating oil prices once a week. You can get quick quotes from suppliers like us to see the current rate.
Watch for the trend – are prices going up, down or staying flat?
If they are decreasing, hold off.
If they have been stable for a few weeks at a low level, that is often the best time to buy.
Watch Crude Oil Prices
Crude oil prices are reported in the news regularly. If you see crude oil prices falling, heating oil will likely follow within a few days or weeks. If crude prices are rising sharply, expect heating oil to cost more soon. You can find crude oil prices on financial news websites or by searching online.
Follow the News
Major world events can move oil prices quickly.
Watch the news about areas that produce oil.
Keep an eye on the economic situations in key nations or conflicts that might affect the supply of oil.
You do not need to be an expert, just aware of big events that could push prices up.
9 Practical Tips for Getting the Best Heating Oil Prices
Here are our top tips for making sure you pay as little as possible for your heating oil.
Buy in bulk when prices are low
If you have a large tank, fill it completely during summer. Buying 2,500 litres at 65p costs £1,625. Buying the same amount at 83p costs £2,075. That is a £450 saving from one smart purchase.
Do not run your tank too low
When your tank gets below a quarter full, water can condense inside and damage your system. Keep your tank well-filled and you avoid repair bills as well as emergency deliveries at high prices.
Order early in the season
May and June are often better than July and August because other people are not thinking about heating oil yet. Beat the crowd and you might get even better prices.
Consider joining a buying group
Some villages and communities organise group orders. When several homes order together, you can negotiate better prices. Ask around your area to see if a group exists.
Keep track of your usage
Know how much oil you use in a typical winter. This helps you judge when to reorder and how much to buy in summer to last through the cold months.
Do not wait for prices to fall further
If prices are low in summer and you think they might drop more, you could miss your chance. When prices are 15% to 20% below winter rates, that is good enough. Do not gamble on saving another few pence and end up buying in winter instead.
Use a tank gauge
A good tank gauge shows exactly how much oil you have left. This stops you running low out of the blue and helps you time your next order. For more about tank gauges, see our Ultimate Guide to Home Heating Oil.
Plan ahead for next winter
In August, think about October to March. Calculate how much oil you will need and make sure you have enough. Planning ahead means you never panic-buy at high prices.
Register with the CWP
If you or your family are elderly, or vulnerable, consider registering for the Cold Winter Priority Scheme to ensure that your heating oil orders are prioritised.
A Real Example: Smart Buying Saves £800 Per Year
Let’s examine an actual example.
Sarah in Leek has a 2,500 litre tank and uses about 2,000 litres per winter. She used to wait until October or November to order, paying winter prices of around 80p per litre. Her annual heating oil cost was about £3,200 for two winter fills (2,000 litres × 2 at 80p).
Now Sarah fills her tank completely in July when prices are around 65p per litre. One fill costs £1,625 (2,500 litres × 65p). She needs one top-up in January, buying 1,000 litres at winter prices of 80p (£800). Her total annual cost is now £2,425.
Sarah saves £775 every year just by changing when she buys. Over five years, that is nearly £4,000 saved – enough for a nice holiday or home improvements.
Should You Buy Heating Oil Now?
Whether you should buy now depends on when you are reading this and what your tank situation is.
If It is Spring or Summer (April to August)
Yes, buy now or wait until early summer if prices are still falling. This is the best buying window. Even if you have oil left in your tank, top it up while prices are low. Think of it as buying oil on sale – you would not skip a sale just because you already have some at home.
If It is Autumn (September to October)
Buy now if your tank is below half full. Prices are already climbing and winter is coming. Waiting will only cost you more. If your tank is more than half full, you might squeeze through to next summer, but watch your gauge carefully.
If It is Winter (November to March)
If your tank is low, you have no choice – buy now to keep your heating on. If you have enough oil to last, wait until spring when prices drop again. Do not let your tank run below a quarter full, whatever the price. The cost of emergency heating or burst pipes is far worse than paying winter oil prices, being cold, or having no access hot water.
Get the Best Heating Oil Prices in Staffordshire
Timing your heating oil purchase is one of the simplest ways to save money. Buy in summer when prices are low. Avoid buying in winter when prices are high. Plan ahead so you are never forced to buy at the wrong time.
At Stoddards, we have been supplying heating oil across Staffordshire, Cheshire, Shropshire and Derbyshire since 1966. We understand local weather patterns and how they affect heating oil use. We can advise you on when to buy and how much you need.
Want to check current prices? Thinking about when to order your next delivery? Call us on 01538 752253 or visit www.stoddards.co.uk. We are here to help you get the best value for your heating oil.
For more information about heating oil costs and tank sizes, see our guide on how much it costs to fill a heating oil tank. For price predictions and historical data, check our heating oil price chart and trends page.