When the water is as warm of this, trout become less active during the day. They still feed but generally slow up.
But when the water starts to cool in the evening, they will feed flat out on whatever is available, usually midges or sedges, and possibly beetles at this time of year.
The rises to midge are gentle and sippy but are splashy to beetles and sedges.
Sedges are more obvious than beetles as they tend to crawl over your face and hands and they run across the water making a wake.
Fishing an appropriate imitation on the evening rise can be very productive.
However, the window of opportunity can be short and identifying what the trout are feeding on needs to be sorted out as quickly as possible.
During the day when it is warm, trout tend to prefer feeding in the shade, which is more often than not provided by willows.
There is a fair chance that they will be taking willow grubs but if the rises are splashy, they could be picking off beetles dropping into the water, especially if there is a breeze.
About this time last year fishing the lower Taieri River, there were a couple of fish rising right in under a large willow close to a pile of branches.
A dodgy place to hook a fish. My usual train of thought is to hook the fish and worry about getting out later.
I persisted and landed a 2kg fish which was very co-operative by swimming straight out into open water making it easy to land.
This fish was spewing up brown beetles so I switched to a beetle imitation and caught the other fish which was still rising.
It took straight off and again this one behaved and weighed 2.5kg.
Recently, again on the lower Taieri River, I was wading up a stretch of water with overhanging willows behind me.
I heard several rises that I could not pick out in the shade so I made an exploratory cast into the darkness.
As I lifted off to cast again, I found I had a fish on which was duly netted and returned.
Two more followed on quick succession from an area no more than 5m long.
Further along I saw several dimple rises under another willow.
I had a couple takes that I missed then saw a shoal of perch chasing the fly.
Eventually I got one to take the nymph then another which dropped off.
After that they seemed to lose interest and moved on.
Over the next week or so there are endless possibilities for fishing either locally or where you holiday.
Reconnaissance pays dividends.
When you get to your holiday destination check out the water conditions and walk any stretch that you may fish in the evening, looking for likely spots for fish feeding.
Also look for likely pitfalls that may catch you out when it gets dark.
Make the most of your opportunities and tight lines.
