Aberdeen’s weather is known for two things: the cold North Sea wind and the amount of light, or lack thereof, in summer and then winter respectively.
The average summer temperature is in the low 60s, but it is quite normal to experience temperatures in the high 50s. As a result, you will never need shorts and only rarely need short sleeved shirts or sandals.
Fall, or autumn as its exclusively called here, is quite lovely with beautiful, brilliant folliage. October tends to be a very wet month, so be prepared for lots of rain. Temperatures will average in the 50s, lower end as the season progresses.
Winter is not nearly as cold as you might expect with a longitude further north than Moscow, Russia. Snow is rare and usually occurs very late winter and into early spring. The winds are quite intense in the winter, often making it seem colder than it is. Temperatures rarely dip below freezing, usually hovering in the 40s.
Spring is generally cool although the burgeoning vegetation is stunning to behold and an excellent reminder that spring is indeed present. Again, you can expect a good deal of rain this time of year and even some early snowfall.
The amount of light change year round is like nothing else you will ever experience. Summer days begin just after 4am, necessitating most to purchase blackout blinds in order to get a full night’s sleep, and ending with sunsets around 10:30pm. As much light as summer holds, winter is exactly the opposite. On the shortest day of the year, the sun finally rises after 9am and sets around 3:30pm for only 5+ hours of daylight. Many people find the dark winters a difficult time due to the lack of sunlight, especially if they are accustomed to very sunny climates. There is an actual condition, Seasonal Affective Disorder or SAD, which can occur when a person is not exposed to enough light. It is much more common in the Nordic and northern Celtic regions, where as much as 20% of the population may be affected during the winter. The situation can be exacerbated by consistent cloud cover as well. Be aware of your own typical reactions to weather and light and keep this in mind as you adjust to life this far north.