Well pheromones work just like smells so in winter with all those clothes outside the pheromones wouldn’t be so strong and u have to expect them to work mostly indoors.
As for beach it will be just o.k. 'cause one is almost compleatly naked.But even that pheros cannot be washed verry easly without spondge and soap, entering the water can wash some ammount so u have to watch out (don’t stop your work though 'cause sometimes people need help 
).It will be a good place to use androstenone products but I have to warn you that if you put alot of -none it u can overdose easly and to come on too strong witch will certainly repell girls and make boys aggressive while around you.U see your body produces natural -none so adding too much can be dangerous.Generally said do not use more than 4-5 sprays (even this can be more maybe 3-4… have to find your sweet spot with experimenting) of the normal strenght of ammo or tuth.
Also good pheromone product that projects young and joyful aura is instant shine.
If you want to look more mature, serious and VIP you should think about a314.This product is good for work, venues that u have to be official, to make people respect you more and think u’re the boss 
Here is a thread that describes the results from mixing various androtic’s products:
Be aware that even pheromones have verry strong impact on others u still have to be active as to help them to do the magic.For example if u wear cttm2 but sitting in the corner of the room not talking to anyone, people maybe won’t come to you to initiate conversation.BUT using the product and saying just some thing, even only “Hi”, can make people to talk more to you than if you didn’t use mones at all.Sometimes it is really awesome like I described in my thread about cttm2 (the HS freshman girls ).