Have a preview and a quick look down, and such repostings get unnecessary...
Danish: Det regner. Kom under mitt paraplyet!
Dutch: Het regent. Kom onder mijn paraplu!
English: It’s raining. Come under my umbrella!
Frisian: It reint. Kom ûnder myn paraplu!
German: Es regnet. Komm unter meinen Regenschirm!
Icelandic: það rignir. Kom undir regnhlífina mína!
Norwegian (Bm): Det regner. Kom under mitt paraplyet!
Swedish: Det regnar. Kom under mitt paraplyet!
Yiddish: !ס' רעדנט. קום אונטער מיין פאראסאלקע /S' regnt. Kum unter mayn parasolke!/
Italian: Piove. Vieni sotto il mio ombrello! (?)
Spanish: Está lloviendo. ¡Métete en mi paraguas!
French: Il pleut. Venez sous mon parapluie! (?)
Bulgarian: Вали. Ела под чадъра ми!
Polish: Pada deszcz. Chodź pod mój parasol!
Russian: Идёт дождь. Приходи под мой зонтик!
Finnish: Sataa. Tule sateenvarjoni alla! (?)
Welsh: Mae hi'n bwrw. Tyrd o dan f'ymbarèl.
Mapudungun: Mawki. Küpange minche ñi katrütumawpeyüm/paraguas mew.