Charles Cavanagh (ASG) has prepared some observing notes for our Solar System for 2019.

Mercury Mercury is best observed in late February and early March low in the south west after sunset. It is also visible in the morning sky in August and late November.

Mercury transits the Sun on 11th November, starting at 12.35 hours GMT. It cannot be emphasised enough that safety precautions must be taken in order to observe this event.

Venus Venus is best seen in the south west after sunset at the end of December.
Mars Mars is visible in the evening sky until May and in the morning at the end of the year. However since Mars does not come to opposition this year, it will only appear as a tiny red dot in telescopes. 
Jupiter Jupiter reaches opposition on 10thJune in Ophiuchus. It will appear low above the southern horizon at magnitude -2.6.  It will outshine everything in the night sky except the Moon. 
Saturn Saturn is at opposition on July7 in Sagittarius at magnitude 0. 1. The rings are still at near maximum tilt being inclined to us at an angle of over 24 degrees. As with Jupiter an unobstructed southern horizon will be needed to observe it.   
Uranus Uranus reaches opposition on 28thOctober in Aries. It appears as a small greenish disk in telescopes. 
Neptune Neptune is at opposition on 10th September in Aquarius. It is visible in binoculars and will be seen as a tiny bluish disk in telescopes of apertures of 100cm and over.