Alloa weather in short
Alloa sits on the flat land beside the Forth, with the Ochil Hills rising just to the north. Summers are mild, winters are cool but not severe, and rain falls in every month. There is no dry season, so plan for a shower whenever you come. The best time to visit Alloa depends less on the thermometer than on which sights are open.
The figures below are Met Office climate averages for 1991 to 2020 from the Edinburgh Gogarbank station. It is a comparison station in the wider area, not a measuring point in Alloa itself, and it says nothing about the hill tops. Highs and lows are monthly averages of the daily highest and lowest temperature, not records. They describe a typical month, not the weather on your day.
Alloa weather month by month
Average highs, lows and rainfall, 1991 to 2020, with the visiting seasons for 2026.
| Month | High | Low | Rain | What it means for a visit |
|---|---|---|---|---|
| January | 6.9 °C | 1.5 °C | 73.0 mm | Alloa Tower and Castle Campbell are closed for the winter. Stirling Castle is open. |
| February | 7.5 °C | 1.6 °C | 61.1 mm | Same winter pause for the tower and for Castle Campbell. Dollar Glen stays free to walk. |
| March | 9.3 °C | 2.7 °C | 52.5 mm | Castle Campbell opens on 1 April, the tower on 3 April. |
| April | 12.0 °C | 4.3 °C | 45.9 mm | Driest month. Castle Campbell and Alloa Tower are open. |
| May | 14.9 °C | 6.7 °C | 50.2 mm | Mild and still fairly dry. Everything is open. |
| June | 17.5 °C | 9.4 °C | 68.8 mm | Warm days for the hills and the glen. |
| July | 19.4 °C | 11.0 °C | 71.9 mm | Warmest month. Stirling Castle is open until 18:00 from April to September. |
| August | 19.2 °C | 11.0 °C | 74.7 mm | Almost as warm as July, and a little wetter. |
| September | 16.9 °C | 9.4 °C | 55.2 mm | Last month for the inside of Castle Campbell. |
| October | 13.2 °C | 6.5 °C | 82.7 mm | Wettest month. Castle Campbell is closed from 1 October, the tower until 31 October. |
| November | 9.5 °C | 3.6 °C | 73.7 mm | Alloa Tower closes from 1 November. Stirling Castle closes at 17:00. |
| December | 7.0 °C | 1.4 °C | 74.9 mm | Stirling Castle is shut on 25 and 26 December. |
For most visitors, May to September gives the widest choice: mild days and every sight open. April is the pick if you want the lowest rainfall figure and are happy with cooler air.
Best time to visit Alloa
Three simple ways to choose.
For the most open sights
Choose April to September. Castle Campbell is open daily from 1 April to 30 September, 10:00 to 16:30, with a break from 12:30 to 13:30. Alloa Tower runs from 3 April to 31 October in 2026. If you want to go inside Stirling Castle as well, see the guide to Stirling Castle tickets.
For the warmest days
July and August have the highest averages, with highs near 19 °C and lows around 11 °C. Evenings still cool down, so pack a layer even in summer.
For the quietest off-season trip
Winter brings cool days and rain, and two of the main interiors are shut. Stirling Castle stays open, and the glen and the town keep their free walks. Dress for wet ground and short days.
Our pick: a whisky tasting for a wet day
Rain falls in every month here, so it helps to keep one plan that happens at a distillery near Stirling Castle, whatever the sky does.
Hand-picked tours, booked through GetYourGuide. Prices are indicative starting prices in British pounds (as of October 2026). Tap a tour for live availability and the current price in your currency.
Tours and day trips around Alloa
Day trips to Stirling, Loch Lomond and the Kelpies, with live prices and availability.
Weather and your walks
What the numbers do not tell you.
Hills and glen
The table covers lowland air, not the summits. Before you climb Dumyat or Ben Cleuch, check a hill forecast and dress for more wind and cloud than in town. The walks are described on the page about the Ochil Hills.
Dollar Glen in wet weather
The paths are steep and uneven, and they run through woodland. After rain they are slippery. Wear boots with a good grip and read the route notes on the Castle Campbell and Dollar Glen page.
Layers, not a fixed outfit
With highs between 7 °C and 19 °C across the year and rain in every month, a waterproof jacket and a warm middle layer cover most days.
A rainy day plan
Alloa Tower and Stirling Castle both have indoor rooms. See the Alloa Tower page for the season, days and prices.
Plan the rest of your trip
Pages that fit the season you choose.
Alloa Tower
Season, opening days and prices for the medieval tower house.
Castle Campbell and Dollar Glen
The summer-only castle and the free glen walk.
Getting there
Edinburgh and Glasgow airports to Alloa by bus, train or car.
If you also plan a stop at the loch, the weather page of Loch Lomond shows how conditions differ there. For a day in the capital, the best time for Edinburgh Castle covers the seasons.
Alloa weather: frequently asked questions
What is the best time to visit Alloa?
May to September combines mild weather with every sight open. April has the lowest average rainfall at 45.9 mm and both Castle Campbell and Alloa Tower open. Winter is cooler and several interiors are shut.
Which month is the wettest in Alloa?
October has the highest average rainfall at 82.7 mm, followed by December at 74.9 mm and August at 74.7 mm. April is the lowest at 45.9 mm. These are 1991 to 2020 averages for the Edinburgh Gogarbank station.
How warm is Alloa in summer?
July has an average high of 19.4 °C and an average low of 11.0 °C. August is close behind at 19.2 °C and 11.0 °C. Single days can be warmer or cooler than these averages.
Does it snow in Alloa?
Winter highs average between 6.9 °C and 7.5 °C, with lows around 1.5 °C, so cold spells are possible. The table does not give snow figures. Check a forecast before you travel or climb in the Ochils.
Are the castles and the tower open in winter?
Castle Campbell is closed from 1 October to 31 March. Alloa Tower is closed from 1 November to 28 February 2027. Stirling Castle is open all winter, from 09:30 to 17:00, except on 25 and 26 December.
Is this the official Alloa visitor site?
No. This is an independent travel guide. It is not run by the council, a tourist board or any of the sights. Check the operator for current opening times before you go.