Basal insulin and winter

seasonal changes can have an effect and I have always thought it was down to the body needing to work harder or less hard to regulate temperature etc......

so this difference in work would result in more or less glucose from the liver....which in turn changes your basal needs.......

from your description though it sounds as though you might just be in for a normal basal change....hypos at roughly the same time every night, perfect example of dose adjustment required.........this can happen quite regularly and so its wise to check your basal frequently, I try and do it once a month....

Agree with Novorapid about basal doses changing no matter what the season is, however I do find I need 1-2 units more in the winter months than I do in the warmer spring & summer months, some people find the complete opposite happens so it's all very confusing

Yep - seasonal changes certainly affect my basal units needs .
Summer - find I need less basal insulin
Winter - find I need more basal insulin

Summer is worse for myself as I can trough and peak much 'more so'
with my BG ranges .
Heat or warmer climate clearly affects me with more risk of Hypo levels .

Winter I hold more steadier BG ranges .

So for myself - weather can indeed affect my BG ranges considerably .
Have to alter my basal insulin accordingly .