。
The sun is strong — let's put on a hat.
Literal
Sunlight [subject-が] strong [because-ので] hat [object-を] wear-[volitional-よう].
陽射し ('sunshine / rays of the sun') is a native word combining 陽 ('sun') + 射し (masu-stem of 射す 'to shine/cast'). 帽子をかぶる ('put on a hat') uses かぶる specifically for headwear — Japanese distinguishes wearing verbs by body part (着る for tops, はく for bottoms, はめる for gloves, etc.).