Crumlin Temperature by Month
The average annual maximum temperature in Crumlin, Antrim County, United Kingdom is 14°C (57°F), with daytime highs ranging from 9°C (48°F) in January to 20°C (68°F) in July. This page covers monthly averages, day-night differences, and how Crumlin compares to cities worldwide.
Crumlin Monthly Temperatures
Seasonal changes in Crumlin bring a little variety without extreme temperature swings. Nighttime lows range from 12°C (54°F) in July to 3°C (37°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Crumlin by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 148 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Crumlin vs the United Kingdom
The map below shows the annual temperature across the United Kingdom. You can also select individual months if you want to compare a specific time of year.
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Crumlin vs World: Temperature Compared
Crumlin's average annual maximum temperature is 14°C (57°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Crumlin?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Crumlin, January is the coolest month, with average highs of 9°C (48°F) and humidity around 89% — considered very high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Crumlin's weather — including monthly rainfall, sunshine hours, and humidity — visit our Crumlin climate page.
