Narrative:

Was departing ZZZ for ZZZ1; about 20nm south along the coast. I had just driven up the coast along this approximate route; and the weather enroute was reasonable VFR with ceilings above 1;000 ft and visibilities 5 miles or more. Weather a few miles [inland] was scattered cu (cumulonimbus) with clear skies above. ZZZ was reporting 700 overcast with 6 miles visibility; and I asked for a SVFR departure to the south. Looking along the runway heading there was no evident change in the ceiling or visibility. Shortly after departure; I informed ZZZ tower that I was clear of their class D; and received 'frequency change approved'. Conditions then rapidly deteriorated with lowering ceiling and visibility. I descended to about 300 ft MSL over the water before deciding that the only safe option was to climb. I climbed to about 2;500 ft MSL; breaking out on top of the marine layer about 2;000 ft MSL. The rest of the flight was uneventful; and I found the weather at ZZZ1 good VFR as I had expected; with clear skies [inland].lessons learned: I have an instrument rating; but am not current; else I would have filed IFR. I will get an ipc (instrument proficiency check) so that I do not place myself in this situation again! With hindsight; a better decision would have been to depart SVFR [inland] where the weather was clearly good VFR. Low marine layer conditions can be patchy and unpredictable. Given my encounter with the suddenly lower ceiling and visibility; I clearly made the right decision for the safety of the flight; but in the process briefly flew in class east airspace in IMC without a clearance.

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Original NASA ASRS Text

Title: BE33 pilot reported flying VFR into IMC. The pilot exited IMC and continued VFR to destination.

Narrative: Was departing ZZZ for ZZZ1; about 20nm S along the coast. I had just driven up the coast along this approximate route; and the weather enroute was reasonable VFR with ceilings above 1;000 ft and visibilities 5 miles or more. Weather a few miles [inland] was scattered Cu (Cumulonimbus) with clear skies above. ZZZ was reporting 700 overcast with 6 miles visibility; and I asked for a SVFR departure to the South. Looking along the runway heading there was no evident change in the ceiling or visibility. Shortly after departure; I informed ZZZ tower that I was clear of their Class D; and received 'frequency change approved'. Conditions then rapidly deteriorated with lowering ceiling and visibility. I descended to about 300 ft MSL over the water before deciding that the only safe option was to climb. I climbed to about 2;500 ft MSL; breaking out on top of the marine layer about 2;000 ft MSL. The rest of the flight was uneventful; and I found the weather at ZZZ1 good VFR as I had expected; with clear skies [inland].Lessons learned: I have an instrument rating; but am not current; else I would have filed IFR. I will get an IPC (Instrument Proficiency Check) so that I do not place myself in this situation again! With hindsight; a better decision would have been to depart SVFR [inland] where the weather was clearly good VFR. Low marine layer conditions can be patchy and unpredictable. Given my encounter with the suddenly lower ceiling and visibility; I clearly made the right decision for the safety of the flight; but in the process briefly flew in Class E airspace in IMC without a clearance.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.