Weather Data for December
22 Ionawr 2025
,Hello Bulb Buddies,
We hope you’re enjoying taking part in the Spring Bulbs for Schools Investigation. This project helps us all learn more about how the weather affects the growth of plants—and your observations play a key role!
As part of the project, please remember to upload your weather data to the Amgueddfa Cymru website. By uploading the data collected so far, we can use it to predict when our plants might flower. It’s exciting to think that your contributions will be part of a bigger picture encompassing schools from across the UK. Your data is really important to us, so please upload everything you’ve documented so far by the end of January!
A Month of Wild Weather
Let’s take a moment to look at the weather from December. It was an eventful month, and this has had an impact on our gardens and bulbs. Here’s a quick weather overview:
- Storm Darragh (6th–8th December) brought heavy rain and severe gales (wind), especially to Wales and southwest England. It was the fourth named storm of the season, and it caused disruption from damaging winds and a lot of rainfall. A rare red weather warning was issued during this multi-hazard event.
- After Storm Darragh, the weather calmed and we saw colder conditions, with frost and freezing fog, especially in Scotland.
- December overall was milder (warmer) than average, with a provisional mean temperature 2.0°C above the long-term average. This made it one of the warmest Decembers on record!
- Rainfall was also above average. Flooding occurred in parts of northwest England and Scotland on the 30th and 31st due to heavy rain.
- It was a dull month, meaning there was less sunshine than average (a total of only 24.3 hours of sunshine!)
What Does This Mean for Our Spring Bulbs?
All this rain and mild weather might mean that our bulbs could flower a bit earlier than expected! It’s important to keep measuring and recording your data to see how the conditions in your area compare to others across the UK.
A Few Tips for Uploading Your Data:
- Double-check your rainfall and temperature measurements before uploading.
- Add any interesting comments about what you’ve noticed in your garden - has the weather affected your bulbs?
- Don’t forget to upload your data weekly to the Amgueddfa Cymru website so that we can all track the progress together.
Looking Ahead
Remember to look out for early signs of spring and share these either with your comments, by email or on X/Twitter. We’re expecting more growth from our plants throughout January, so remember to keep a close eye on them.
Happy investigating!
Professor Plant
December's comments:
Bulb Growth Observations:
Langbank Primary School: Most of the pots/bulbs are starting to grow.
Professor Plant: Fantastic news! Your bulbs are waking up, spring must be just around the corner.
Ysgol Tycroes: Nearly all of our bulbs now have shoots coming out of them.
Professor Plant: Well done! Shoots are a sign that your bulbs are healthy and happy. Keep observing for any changes.
Ysgol Llanddulas: Some of our bulbs have grown a lot. No flowers still.
Professor Plant: That’s perfectly normal. Flowers take time, so keep visiting your plants to see how they grow!
Henllys Church in Wales School: It felt a lot colder than it was this week, and our bulbs are trying to push through the soil.
Professor Plant: Bulbs are incredibly resilient! Even in cold weather, they’ll keep growing. Great observation!
Bwlchgwyn Primary School: Most of our plants have shoots now. We think they are mostly the daffodils pushing through.
Professor Plant: Spot on! Daffodils tend to grow quickly this time of year. It will be interesting to see if the crocus grow later but bloom first!
Langbank Primary School: We spotted signs of growth in some of our pots today and 2 of the bulbs planted in the ground.
Professor Plant: Brilliant! It’s exciting to see both potted and planted bulbs thriving. Well done for watching them!
Clonalig Primary School: Lots of bulbs are beginning to shoot up, and the mystery bulbs’ shoots are well up.
Professor Plant: How exciting! Mystery bulbs add a layer of fun and soon, you might be able to tell what they are. Keep observing closely.
St John The Baptist Primary School Portadown: We noticed some of our plants have some green shoots appearing.
Professor Plant: That’s excellent news! Green shoots are the first step towards a beautiful display. Keep up the good work!
Cold Weather and Ice:
Cornist Park C.P: There is a lot of snow, and it is very cold. The wind makes it feel like -1 degrees.
Professor Plant: Brrr! The snow can make things challenging for plants, but your bulbs are hardy and will continue growing underground. It's interesting how we feel the weather, some days feel colder to us even when the temperatures the same. This can be for reasons like wind chill, humidity, and sunlight.
Stanford in the Vale Primary School: Very cold, and the ice has settled in.
Professor Plant: It’s amazing how bulbs can survive icy weather. I hope you are all staying warm too!
Bwlchgwyn Primary School: Lots of snow and ice covering our rain gauge all week.
Professor Plant: Snow and ice can be tricky for measuring rainfall. It's fun to bring the rain gauge inside and take the reading after the ice has melted.
Pil Primary School: There was hardly any rainfall this week, and it was very cold.
Professor Plant: Cold, dry weather is tough, but it’s good to see you’re keeping up with observations. Well done!
Ysgol Tycroes: It felt really cold this week.
Professor Plant: It can feel extra cold in winter, but your bulbs are well-equipped to handle the chill. Make sure you wrap up warm when going outside to take your readings.
Rain and Storms:
Scotstoun Primary School: The rain gauge has been full for some time now - it has been full due to torrential rainfall in December.
Professor Plant: Good observation. Remember to empty your rain gauge after taking each days reading!
Our Lady of the Assumption Catholic Primary School: Monday 6th January includes rainfall from over Christmas. Snowfall on the night of 3rd January melted.
Professor Plant: Melting snow often adds to your rainfall measurements. Great work noting the context, it’s very helpful!
Rhayader Primary: Over 50mm of rainfall after the weekend, with Storm Darragh. No temperature readings as school was shut due to no electric after the storm.
Professor Plant: That sounds like a wild week! Storm Darragh brought lots of rain, well done for recording what you could. Thank you for sharing the impact that the storm had on your school.
Ysgol Pentreuchaf: Yr ysgol ar gau Dydd Llun, dim trydan yna yn dilyn Storm Darragh.
Professor Plant: Storm Darragh caused so much disruption. Diolch for keeping up with your records despite the challenges!
Ysgol Gymraeg Morswyn: 7-8/12/24 - Storm Darragh.
Professor Plant: Storm Darragh made quite an impact! Thank you for noting the storm in your comments.
St Mary’s Primary School - Newry: There was lots of rainfall collected on Monday because of Storm Darragh.
Professor Plant: Great job recording after the storm. That rainfall will help hydrate the bulbs in the soil.
Ysgol Porth Y Felin: There was a storm—that is why there is no record for some days.
Professor Plant: Storms make recording tricky, especially big storms that might cause school closures. You’ve done well to note the circumstances—thank you!
General Weather Observations:
Cornist Park C.P: Today it is cloudy and dark. It is damp and cold.
Professor Plant: Cloudy and damp conditions can be tough, but bulbs still grow under the soil. Well done for getting outside and monitoring!
Meldrum Primary School: Not as much rainfall this week as previous weeks, but there is still a general amount of rainfall.
Professor Plant: Great observation. A balance of rain is important for bulbs, they’ll appreciate the moisture in the soil.
Pil Primary School: There has been lots of rain on Thursday. I got wet reading the temperature and rainfall this week.
Professor Plant: Thank you for your dedication! Your readings are invaluable - great work braving the rain.
Mountain Lane School: Storm Darragh on Fri/Sat.
Professor Plant: Thank you for recording such significant weather events.
Holiday or School Events:
Stanford in the Vale Primary School: It was hot during the first 3 days but then it got a bit colder. Also, Merry Christmas!
Professor Plant: Hope you had a Merry Christmas too! Thank you for your weather observations.
Wellshot Primary School: All of our school Christmas shows and parties took over the first few days, but we made sure to update the last 2 days.
Professor Plant: Great teamwork! Balancing festivities and science is impressive, well done!
Mountain Lane School: Nadolig Llawen.
Professor Plant: I hope you all had a fantastic Christmas too!
Ysgol Porth Y Felin Christmas holidays/yay!
Professor Plant: Thank you for keeping your weather records up to date right up to the holidays!